San Pedro (huachuma) ceremony

1. Introduction

Version followed: northern Peruvian curanderismo with the San Pedro cactus as described by Peru's Ministry of Culture in Resolución Viceministerial N° 000252-2022-VMPCIC/MC (14 November 2022) and its technical report (Informe N° 000008-2022-DPI-PRM/MC), with academic ethnography as attributed, outsider context; the psychotherapist's own work follows the DSM-5-TR Cultural Formulation Interview (CFI). This is a living healing tradition, not a psychotherapy. A psychotherapist does not conduct, lead, facilitate or prescribe San Pedro ceremonies; this guide covers the clinician's culturally responsive work with a client who belongs to, consults, or has taken part in this tradition.

• What the tradition is, as Peru's state heritage body describes it. In 2022 the Ministry of Culture declared the "conocimientos, saberes y usos tradicionales del cactus San Pedro en las prácticas del curanderismo en el norte del Perú" Cultural Heritage of the Nation. The declaration covers practice in Lambayeque, La Libertad, Tumbes, Piura, Cajamarca, Amazonas and Áncash. It describes a worldview combining pre-Hispanic and Christian elements, in which health is a balance between physical and spiritual levels, and the ritual use of the cactus is understood by practitioners as a guide to understanding illness and reaching a diagnosis. The cactus is framed there as a means of spiritual insight, not recreation. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/]
• How healing is understood within the tradition (attributed, not stated as fact). The Ministry's report describes ailments that practitioners attribute to the action of negative forces ("atribuidas a la acción de fuerzas negativas"), including spiritual entities and harm sent through another specialist; treatment, in the tradition's own terms, aims to clear these forces so that the person regains balance, which practitioners link to health. The report does not list named conditions. [source: https://cdn.www.gob.pe/uploads/document/file/3845951/RVM%20252-2022-VMPCIC-MC%20-%20INFORME%201.pdf.pdf] An ethnobotanical survey of northern Peru found that "magical/ritual" ailments were the largest single use category for medicinal plants in the region, which the authors describe as the centre of an old Central Andean "Health Axis" with healing traditions traceable at least to the Moche period. [source: https://doaj.org/article/4d79c3a684ff4e1ba711d0eaf234e88c]
• The substance. San Pedro cacti contain mescaline, a phenethylamine hallucinogen acting mainly at serotonin 5-HT2 receptors with sympathomimetic effects. [source: https://benthamdirect.com/content/journals/cmp/10.2174/1874467211666181010154139] The botanical naming (Echinopsis or Trichocereus) varies between sources [uncertain: not verified]. This guide gives no preparation, dosing, sourcing or ceremonial detail.
• Core idea of change for the psychotherapist. Change in the therapy room comes from understanding the client's own illness meanings and help-seeking (CFI, explanatory model), holding traditional healing and clinical care side by side without pathologising or romanticising either, keeping the client medically and psychologically safe, and helping the client integrate whatever they have experienced into their values and life. [synthesis, drawing on the CFI's stated purpose: source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-CulturalFormulationInterview.pdf]

2. Framework

Who holds authority in the tradition

• Maestros curanderos are the ritual specialists; the 2022 resolution describes them as mediators with the spiritual world. Their assistants (alzadores on the north coast; the report also names huamaneros) typically train with a maestro for about three years; both women and men practise. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/] [source: https://cdn.www.gob.pe/uploads/document/file/3845951/RVM%20252-2022-VMPCIC-MC%20-%20INFORME%201.pdf.pdf]
• No central licensing body. The Ministry's report states that healers do not form an organised or centralised body; standing rests on community respect, trust and reputation, and transmission is mostly within families. It notes that many maestros now lack apprentices. [source: https://cdn.www.gob.pe/uploads/document/file/3845951/RVM%20252-2022-VMPCIC-MC%20-%20INFORME%201.pdf.pdf]
• State role. The Ministry of Culture (Dirección de Patrimonio Inmaterial, with regional culture directorates and the community bearers) holds the heritage declaration and must report every five years on the state of the practice and its risks. The heritage body is not a regulator of individual healers. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/]
• What the declaration excludes. Harmful practice by maleros (specialists said to use the cactus to cause harm) is expressly excluded from the declaration, and the text distinguishes healing use from recreational use, drug misuse and "turismo místico". It also notes that the practice has entered commercial circuits and the media, and that urban settings lean towards profit and tourist supply. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/]
• Scholarship (outsider accounts). The best-known English-language ethnographies of northern Peruvian curanderismo and San Pedro are by anthropologist Douglas Sharon, including Wizard of the Four Winds: A Shaman's Story (1978) and, with Donald Joralemon, Sorcery and Shamanism: Curanderos and Clients in Northern Peru (1993). These are outsiders' accounts and are cited here only as context; their content is not summarised in this guide. [source: https://en.wikipedia.org/wiki/Douglas_Sharon] [uncertain: tertiary source for the bibliographic details]

Legal status (as sources state)

• Internationally, the 1971 Convention on Psychotropic Substances schedules mescaline but not the plants containing it; the International Narcotics Control Board confirmed in 2001 that such plants are not under international control. [source: https://www.iceers.org/en/news/1971-convention-indigenous-peoples/]
• In the United States mescaline is Schedule I; the religious exemption described applies to peyote within Native American Church ceremonies, not to San Pedro. [source: https://www.drugs.com/mescaline.html] National law on the cactus itself differs by country and changes; check current law in the client's jurisdiction [uncertain: not verified].
• In Peru the traditional knowledge and uses in northern curanderismo are protected cultural heritage. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/] Peru's drug-law position on the cactus is [uncertain: not verified].

The psychotherapist's phases [synthesis]

No source sets a phase model for clinicians working alongside this tradition. The following is a practical sequence built on the CFI and on the risks the sources describe.

The CFI supplementary modules can be used at the first evaluation, later in care, or repeatedly during treatment, which supports returning to Phase A questions at any point. [source: https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Supplementary-Modules.pdf]

3. Guiding principles

• The therapist works alongside, never inside, the tradition. Do not conduct, lead, co-facilitate, recommend or arrange ceremonies; the Ministry recognises maestros curanderos, not therapists, as the tradition's specialists. [synthesis; authority: source above]
• Authority belongs to the tradition's bearers. Questions about what the tradition means or permits go to the client and, with consent, to the healers and community they recognise, not to the therapist's reading of books. [synthesis]
• Describe beliefs as the client and tradition hold them. Record "client attributes illness to harm sent by another person" rather than endorsing or dismissing it. [synthesis, consistent with WHO's stance of "neither judging nor endorsing" traditional medicine concepts: source: https://www.who.int/standards/classifications/frequently-asked-questions/traditional-medicine]
• The CFI is the default assessment frame. APA describes it as usable "by any clinician providing services to any individual in any care setting"; it informs, but is not the sole basis for, diagnosis. [source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-SectionIII.pdf] [source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-CulturalFormulationInterview.pdf]
• Neither pathologise nor miss illness. A culturally normative experience is not a disorder; a psychotic or manic episode is not made safe by its cultural framing. [synthesis; diagnostic exclusions: source: https://pmc.ncbi.nlm.nih.gov/articles/PMC9199574]
• Never advise on medicines or substances. Give no doses, preparations or sourcing; never advise starting, stopping or changing a medicine; route every medication question to the prescriber. [synthesis]
• Distinguish community healing from commercial and tourist offers, as Peru's own heritage text does. The declaration separates curanderismo from recreational use and "turismo místico". Do not encourage clients to seek ceremonies outside legitimate community pathways. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/]
• Client autonomy with honest risk information. The client decides about their spiritual and traditional care; the therapist's duty is accurate risk information from clinical sources and a route to medical review. [synthesis]
• Consent and confidentiality govern every contact with healers, family or interpreters. Written, specific, revocable. [synthesis]
• Safety and safeguarding override cultural deference. Coercion, sexual contact, abuse, involvement of minors, or delay of urgent medical care trigger normal safeguarding duties. [synthesis]
• Cultural humility includes history. The Ministry's report describes a long clash between this worldview and colonial and later views of health; expect mistrust and do not demand justification of the client's choices. [source: https://cdn.www.gob.pe/uploads/document/file/3845951/RVM%20252-2022-VMPCIC-MC%20-%20INFORME%201.pdf.pdf]
• Psychedelic-assisted therapy is a separate field. Clinical psychedelic-assisted therapy and its integration protocols are covered in Domain VII; this guide does not cover them. [synthesis] Amazonian vegetalismo and ayahuasca ceremony are covered in guide 107, and the ayahuasca churches in guide 116.

4. Intervention inventory

All interventions below are the psychotherapist's own. None of them is a curanderismo practice, and none involves the cactus. Example language is illustrative unless quoted and cited.

4.1 Cultural humility and self-examination

• Purpose / when: Before and throughout work with any client connected to curanderismo or San Pedro; essential if the therapist has personal views on psychedelics, "shamanism" or Andean spirituality (enthusiasm or scepticism). [synthesis]
• Steps: (1) Note your own assumptions: is San Pedro, in your mind, "medicine", "drug", "exotic" or "dangerous"? (2) Note what you do not know: the tradition has its own specialists and no single voice. (3) Check that your notes describe beliefs in the client's terms. (4) Take the case to supervision or consultation if you notice strong admiration, curiosity about attending ceremonies yourself, or dismissiveness. [synthesis]
• Example language (illustrative): "I don't come from this tradition, so I'll rely on you to tell me what it means for you and your family. Please correct me if I get something wrong."
• Watch for: asking the client to teach you about ceremonies for your own interest; using Spanish or Quechua terms you do not understand; therapist enthusiasm for the experience replacing attention to the client's problem. Working: the client corrects you freely and brings more of their own meanings.

4.2 Core Cultural Formulation Interview (DSM-5-TR)

• Purpose / when: At intake for any client whose problem, explanation or help-seeking involves curanderismo, curanderos or San Pedro, including people who travelled to Peru for ceremonies. The CFI clarifies the problem from the perspective of the person and their social network, what it means, possible sources of help and what they expect from services. [source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-CulturalFormulationInterview.pdf]
• Steps: Use the official APA form (16 questions; clinicians may reproduce it for use with their own patients). Work through its four domains: (1) cultural definition of the problem; (2) cultural perceptions of cause, context and support, including the role of cultural identity; (3) self-coping and past help-seeking, including barriers; (4) current help-seeking, including preferences and the clinician–patient relationship (e.g. perceived racism, language barriers). Record answers in the client's words. [source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-CulturalFormulationInterview.pdf] Time needed is not stated on the APA form; the DSM-5 field trial reported that later interviews took less time, but gave no minutes in its abstract [uncertain]. [source: https://experts.umn.edu/en/publications/feasibility-acceptability-and-clinical-utility-of-the-cultural-fo/]
• Example language (illustrative): "Sometimes people describe their problem differently to family or to a healer than to a doctor. How would you describe it to the people close to you?" — "Have you already looked for help from anyone, including healers or a maestro?"
• Watch for: the client giving "clinic answers" and holding back their own explanation; shame or fear of being judged for consulting a curandero; language barriers (see 4.11). Working: the client uses their own terms (e.g. harm sent by someone, loss of balance) and links them to what they want from you.

4.3 CFI supplementary modules and Informant Version

• Purpose / when: When the core CFI shows that spirituality, traditional healing, migration or family views are central. APA's 12 modules can be add-ons or standalone and can be repeated during treatment. [source: https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Supplementary-Modules.pdf]
• Steps: Choose modules by need: Spirituality, Religion and Moral Traditions (the client's relationship to curanderismo, Catholic or other faith, and any conflict between them); Explanatory Model; Coping and Help-Seeking (healers, maestros, family remedies, clinics); Cultural Identity; Immigrants and Refugees for Peruvian or Andean migrants; Patient–Clinician Relationship if trust is fragile; Social Network and Psychosocial Stressors. Use the Informant Version (17 questions) with a family member only with the client's consent. [source: https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Supplementary-Modules.pdf] [source: https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Informant.pdf]
• Example language (illustrative): "You mentioned your grandmother took you to a curandero as a child. Is that tradition still part of how you look after yourself?"
• Watch for: using modules as a checklist that crowds out the presenting problem; family informants who disagree with the client's choices. Working: modules add specific information that changes the plan.

4.4 Exploring the explanatory model (Kleinman)

• Purpose / when: To understand what the client believes the illness is, what caused it and what will heal it, especially when the client attributes distress to harm sent by another person, envy, spirits or loss of balance. [source: https://tanenbaum.org/wp-content/uploads/2021/06/HANDOUT-Explanatory-Models-of-Illness.pdf]
• Steps: Ask, in your own words, Kleinman's eight areas: what the client calls the problem; what caused it; why it started when it did; what it does and how it works; how severe it is and how long it will last; what treatment the client thinks they should receive; the chief problems it has caused; what they fear most. (Kleinman, Eisenberg and Good 1978, Annals of Internal Medicine 88.) [source: https://tanenbaum.org/wp-content/uploads/2021/06/HANDOUT-Explanatory-Models-of-Illness.pdf] [source: https://www.cambridge.org/core/product/F99D9D36838A8207D377730DEB445F7B/core-reader] Then write a short side-by-side summary: client's model and your clinical formulation, with points of agreement. [synthesis]
• Example language (illustrative): "What do you think brought this on? … And what do you fear most about it?" — "You see this as harm someone sent you, and I also see signs of a depression that's hitting your sleep and appetite. Can we work on both of those?"
• Watch for: converting the client's model into your terms too quickly; ignoring fear of sorcery that drives avoidance or conflict with relatives or neighbours. Working: you can negotiate goals that make sense in both frameworks.

4.5 Using cultural concepts of distress as DSM-5-TR describes them

• Purpose / when: When the client names an idiom or syndrome (e.g. susto, nervios, ataque de nervios) or attributes illness to negative forces. DSM-5-TR describes cultural concepts of distress as idioms, explanations or perceived causes, and syndromes, and says its examples were revised to avoid stigmatising or generalising language. [source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-SectionIII.pdf] Susto, nervios and ataque de nervios appear in DSM-5-TR teaching lists. [source: https://www.unmc.edu/bhecn/_documents/dsm5tr_bw_6_slides_11_pages.pdf] Whether any DSM-5-TR concept corresponds to the specific afflictions treated in northern Peruvian curanderismo is not stated in the Ministry's texts [uncertain].
• Steps: (1) Ask what the term means to this client and family (meanings vary). (2) Map associated symptoms and functioning. (3) Screen for any DSM disorder independently; a cultural concept can coexist with, or stand in for, depression, anxiety, PTSD or psychosis. (4) Record the concept as the client's explanation, not as a diagnosis. [synthesis on the DSM-5-TR framing]
• Example language (illustrative): "When you say it's susto, what happened, and what has changed in you since?"
• Watch for: stereotyping (assuming every Andean client has susto); missing trauma underneath a fright narrative. Working: the idiom opens discussion of symptoms rather than closing it.

4.6 Asking about healer consultation and San Pedro use without judgement

• Purpose / when: Every assessment of a client from northern Peru or the wider Andes, and of any client who has travelled for "plant medicine" or ceremonial retreats. Clients may conceal use for fear of judgement or legal consequences. [synthesis]
• Steps: (1) Normalise: ask routinely about all sources of help. (2) Ask whether they have consulted a curandero or maestro, and in what setting (family or community healer in their home region versus a commercial or tourist-oriented offer, a distinction Peru's own declaration draws). [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/] (3) Ask whether San Pedro was taken, when, how often, with which other substances or medicines, and what followed (physically and psychologically). Do not ask about or record ceremonial content beyond what the client volunteers and needs to share. (4) Ask about plans to take part again. [synthesis]
• Example language (illustrative): "Many people use both healers and clinics. Have you seen a curandero or taken part in any ceremony, here or abroad? I ask so I can keep you safe, not to judge."
• Watch for: the client minimising effects; secrecy obligations the client feels towards the healer (respect them unless safety is at stake). Working: open disclosure that lets you assess risk.

4.7 Medical and psychiatric risk screening and routing to the prescriber

• Purpose / when: When a client has recently taken, or plans to take, San Pedro, or reports after-effects. The therapist screens and refers; the therapist does not advise on medicines or on whether to take the cactus. [synthesis]
• Steps:
  • Know the risks clinical sources name for mescaline: intense nausea and vomiting; tachycardia, raised blood pressure, raised temperature with sweating; tremor, impaired coordination, accidental injury; seizures; anxiety, panic, paranoia and psychosis; persisting perceptual disturbance ("flashbacks"); rarely suicidal thoughts or actions; possible risk to the fetus in pregnancy. [source: https://www.drugs.com/mescaline.html] A pharmacology review describes mescaline as sympathomimetic, with psychosis and depersonalisation among its effects, while judging most reported intoxications mild and dependence practically absent. [source: https://benthamdirect.com/content/journals/cmp/10.2174/1874467211666181010154139]
  • Medicines: drug-information sources warn of possible dangerous interactions with medicines that affect serotonin (antidepressants, antipsychotics, mood stabilisers) and with heart or stimulant drugs. [source: https://www.drugs.com/mescaline.html] A 2023 systematic review found almost no mescaline-specific interaction data; reports for other psychedelics include altered effects with antidepressants and anecdotal seizures with lithium. [source: https://www.medrxiv.org/content/10.1101/2023.06.01.23290811.full.pdf] Some clients also attend ayahuasca ceremonies (guides 107 and 116): ayahuasca's harmala alkaloids inhibit monoamine oxidase, and combining MAO inhibition with SSRIs or other serotonergic medicines is contraindicated. [source: https://www.iceers.org/en/ayahuasca-safety-profile/] Route every medicine question to the prescriber; never advise starting, stopping or changing a medicine.
  • Screen for: personal or family history of psychosis or bipolar disorder; current suicidality; heart disease or hypertension; seizure disorder; pregnancy; current prescribed and over-the-counter medicines; other substances. [synthesis]
  • Where any of these is present, or the client is on psychiatric medication, tell the client plainly that clinical sources describe risks and that the question belongs with their prescriber or GP; with consent, write to the prescriber. Never suggest stopping or pausing a medicine. [synthesis]
  • Acute physical symptoms (chest pain, seizure, very high temperature, confusion) are a medical emergency: emergency services. [synthesis]
• Example language (illustrative): "I can't advise you about the cactus or your medication. What I can tell you is that medical sources describe heart, seizure and mental-health risks, and some concern with antidepressants and lithium. Would you be willing for me to write to your psychiatrist so they can talk it through with you?"
• Watch for: clients stopping medication on their own to prepare for a ceremony; you drifting into dosing or "safer use" advice. Working: the prescriber is involved and the client makes an informed choice.

4.8 Distinguishing culturally normative experience from disorder

• Purpose / when: When a client describes visions, communication with spirits, sensed harm from others, or altered states during or after healing, or when family members report unusual behaviour.
• Steps:
  • Assess the experience in its context: Was it within a broadly accepted collective cultural or religious practice? Was it voluntary and time-limited? DSM-5 excludes dissociative trance and possession presentations that are "a normal part of a broadly accepted" collective cultural or religious practice; ICD-11 Trance disorder (6B62) and Possession trance disorder (6B63) require states that are involuntary, unwanted, outside accepted practice, and cause significant distress or impairment. [source: https://pmc.ncbi.nlm.nih.gov/articles/PMC9199574] [source: https://www.findacode.com/icd-11/code-1807490186.html] The DSM-5-TR wording is retained in substance [uncertain on exact text]. [source: https://umsystem.pressbooks.pub/aswbprep/?p=1299]
  • Separate three things: the expected, time-limited effects of a ceremony as the client and community understand them; a substance-induced state that persists or recurs (psychosis, perceptual disturbance, mania); and an independent disorder that may have been present before. [synthesis]
  • Ask community members or cultural brokers (with consent) whether the experience is seen as expected within the tradition. [synthesis] The note that culturally sanctioned beliefs should not count as psychotic symptoms is widely taught, but its DSM-5-TR text is [uncertain: not verified].
  • Red flags for illness: persistent hallucinations or fixed beliefs outside ceremonial context, loss of function, disorganisation, sleeplessness and elation, suicidality, distress the community itself sees as abnormal. [synthesis]
• Example language (illustrative): "What you saw during the ceremony makes sense to you within the tradition. What worries me is that, two weeks later, you're still hearing voices at night and not sleeping. Would your family or the maestro see that as part of the healing, or as something else?"
• Watch for: pathologising spiritual meaning; or accepting "it's part of the process" for an evolving psychosis. Working: a formulation the client and family can accept, with clear follow-up.

4.9 Decision support when a client is considering a ceremony

• Purpose / when: When a client asks whether they should take part, or tells you they plan to, including commercial retreats or travel to Peru. The therapist neither recommends nor forbids, does not refer to ceremonies, and does not help locate a practitioner. [synthesis]
• Steps: (1) Explore the client's reasons and expectations (cure, insight, family tradition, curiosity, escape). (2) Ask what the community or family they belong to would see as a legitimate path; note that Peru's heritage declaration distinguishes community curanderismo from recreational use and mystic tourism, and excludes harmful practice. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/] (3) Share the clinical risk information in 4.7 and route medical questions to the prescriber. (4) Name general safety concerns in commercial settings (pressure to pay or continue, isolation, sexual approaches, being told to stop medicines or avoid doctors). [synthesis] (5) Respect the client's decision and keep the therapeutic door open. [synthesis]
• Example language (illustrative): "It's your decision, and I won't tell you what to do spiritually. I do want you to have the medical information and to know you can come back and talk about whatever happens."
• Watch for: the client seeking your endorsement; avoidance of the presenting problem through repeated ceremonies; travel to a tourist offer framed as "traditional". Working: an informed decision and continued engagement.

4.10 Collaboration and referral with community-sanctioned healers (when the client wishes)

• Purpose / when: When a client in ongoing traditional care with a recognised curandero wants the therapist and healer to be aware of each other. In northern Peru there is no central healer register; recognition rests on community reputation. [source: https://cdn.www.gob.pe/uploads/document/file/3845951/RVM%20252-2022-VMPCIC-MC%20-%20INFORME%201.pdf.pdf]
• Evidence on collaboration elsewhere: In Nigeria and Ghana, the COSIMPO cluster randomised trial of collaborative shared care between traditional and faith healers and primary health care workers for psychosis (Gureje et al., The Lancet, 2020) found greater symptom reduction and a larger fall in harmful practices with collaboration. [source: https://pubannotation.org/docs/sourcedb/PubMed/sourceid/32861306] [source: https://centreforglobalmentalhealth.org/node/839] In a Ghanaian prayer camp, adding psychiatric medication to usual care reduced symptoms but did not significantly reduce days in chains (Ofori-Atta et al., Br J Psychiatry 212(1)). [source: https://www.mentalhealthdataprizeafrica.aphrc.org/repository/paper/33405/joining-psychiatric-care-and-faith-healing-in-a-prayer-camp-in-ghana-randomised-trial] Evidence from trials of collaboration with San Pedro healers is not reported in these sources [uncertain: not verified]. The WHO Traditional Medicine Strategy 2014–2023 supports safe integration of traditional medicine, including practitioners, into health systems. [source: https://www.who.int/activities/implementation-of-the-WHO-traditional-medicine-strategy-2014-2023]
• Steps: (1) Collaboration is client-initiated and client-led. (2) Get written, specific consent: what may be shared, with whom, and for what purpose. (3) Limit shared information to what supports the client's care (e.g. that the client is in therapy for depression and has a psychiatrist). (4) Respect the healer's domain; do not ask for ceremonial content. (5) Agree on safety: emergencies go to medical services; medication decisions stay with the prescriber. (6) Document. [synthesis]
• Example language (illustrative): "If you'd like, I could speak with the maestro about how we can both support you. You decide what I can share."
• Watch for: the therapist being drawn into endorsing ceremonies as treatment; advice from any source to stop psychiatric medicines; confidentiality leaks in small communities. Working: the client feels both forms of care respect each other.

4.11 Interpreters and cultural brokers

• Purpose / when: When the client's preferred language is Spanish, Quechua or another Indigenous language, or when a family member or community member can explain local meanings. The CFI asks directly about language barriers in the clinician–patient relationship. [source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-CulturalFormulationInterview.pdf]
• Steps: Use a trained professional interpreter rather than family where possible; brief them on confidentiality and on not softening beliefs; check whether the interpreter knows the client's community (helpful or a privacy risk); use a cultural broker separately, with consent, for meaning rather than translation. [synthesis]
• Example language (illustrative): "Please translate everything exactly, including words about healing or harm, even if they seem unusual."
• Watch for: interpreters editing out spiritual content; children used as interpreters. Working: the client's terms appear unchanged in the record.

4.12 Integrating healing and ceremonial experiences

• Purpose / when: After a client has taken part in curanderismo or a San Pedro ceremony and wants to make sense of it, or is distressed by it. Formal psychedelic integration protocols belong to Domain VII; this is ordinary therapeutic processing. [synthesis]
• Steps: (1) Let the client narrate at their own pace, in their own frame. (2) Explore meaning, emotions and implications for relationships and values. (3) Separate insight to act on from impulses that need time (e.g. sudden decisions to end relationships or stop treatment). (4) Assess for after-effects (4.7, 4.8). (5) Link back to the presenting problem and therapy goals. [synthesis]
• Example language (illustrative): "What from that night feels most important to you now? … How would you like it to change the way you live, and what would be a first small step?"
• Watch for: retraumatisation when the experience surfaced old trauma; spiritual bypassing of ongoing problems; the therapist interpreting the experience for the client. Working: the client describes the experience as part of their story without distress dominating.

4.13 Responding to acute distress or spiritual crisis after a ceremony

• Purpose / when: When a client presents frightened, confused, depersonalised, suicidal or psychotic after taking part. [synthesis]
• Steps: (1) Check physical safety first; medical symptoms (seizure, chest pain, hyperthermia, confusion) go to emergency services. [source for physical risks: https://www.drugs.com/mescaline.html] (2) Assess suicide risk using standard practice, including lethal-means counselling. (3) Ground and orient; reduce stimulation; involve a trusted support person. (4) Arrange urgent psychiatric review if psychotic or manic symptoms persist. (5) Once stable, use 4.8 and 4.12. [synthesis]
• Example language (illustrative): "You're safe here. You're in my office, it's Tuesday afternoon. Let's slow your breathing down together."
• Watch for: waiting too long because "it will pass"; dismissing the spiritual content once the crisis settles. Working: return to baseline and a coherent narrative.

4.14 Safeguarding

• Purpose / when: Whenever a client discloses coercion, sexual contact or assault by a healer or facilitator, exploitation, being told to stop medical treatment, involvement of children or vulnerable adults, or harm attributed to practitioners the tradition itself excludes. Peru's declaration explicitly excludes harmful practice from heritage protection. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/]
• Steps: Follow your local safeguarding and mandatory reporting rules as for any setting; cultural framing does not change them. Support the client to report to police or authorities in the country concerned if they wish; document facts carefully; do not name or investigate the practitioner yourself. Ask about anyone under 18 involved. [synthesis]
• Example language (illustrative): "What happened was not part of healing, and it wasn't your fault. Let's look at what support and options you have."
• Watch for: shame and self-blame; fear of being disloyal to the tradition. Working: the client separates the harm from their relationship to their culture.

4.15 Working with families and communities

• Purpose / when: When family members hold different views (e.g. one side trusts curanderos, another sees it as superstition or sin), or when sorcery suspicions create conflict with relatives or neighbours. [synthesis]
• Steps: Use the CFI Informant Version and Social Network module with consent; map who supports and who opposes; find shared goals (the client's recovery); avoid taking sides on belief. [source: https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Informant.pdf] [synthesis]
• Example language (illustrative): "You all have different ideas about what's causing this, and you all want her to get better. Can we start from that?"
• Watch for: accusations of sorcery escalating into threats or violence (safety planning). Working: reduced family conflict and coordinated support.

4.16 Addressing historical suppression, racism and identity

• Purpose / when: With Andean, Indigenous or mestizo clients, especially migrants, who carry experiences of discrimination or of their healing traditions being dismissed. The Ministry's report describes a historical clash between this worldview and colonial and later views of health and illness. [source: https://cdn.www.gob.pe/uploads/document/file/3845951/RVM%20252-2022-VMPCIC-MC%20-%20INFORME%201.pdf.pdf]
• Steps: Use the CFI Cultural Identity, Immigrants and Refugees, and Patient–Clinician Relationship modules; name the power difference; validate experiences of being dismissed by health services; explore pride and conflict in cultural identity. [source: https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Supplementary-Modules.pdf] [synthesis]
• Example language (illustrative): "Have doctors or therapists ever made you feel your family's ways of healing were backward? I'd like to know if anything I do feels like that."
• Watch for: the opposite problem of exoticising the client as a "shaman's heir". Working: the client reports feeling respected and brings more of themselves.

5. Handling problems

The sources on this tradition do not address therapy problems; the guidance below is [synthesis] unless a source is cited.

• Client hides traditional care or San Pedro use, then discloses late. Thank them for telling you; avoid any sign of reproach; repeat 4.6 and 4.7. Ask what made it hard to tell you and adjust (e.g. language, perceived judgement). [synthesis; CFI barriers and relationship questions: source: https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-CulturalFormulationInterview.pdf]
• Client asks you to recommend a maestro, a retreat, or whether it is "safe". Decline to recommend or locate practitioners; explain your role; give clinical risk information and route medical questions to the prescriber; offer to help them think through their decision (4.9). [synthesis]
• Client asks you to attend, or a healer invites you. Decline; attending changes your role and boundaries. If collaboration is wanted, keep it to consented information-sharing (4.10). [synthesis]
• Client plans to stop or pause psychiatric medication for a ceremony. Do not advise either way; state that clinical sources describe possible interaction and relapse risks and that this decision belongs with the prescriber; with consent, contact the prescriber promptly. [source on interaction concerns: https://www.drugs.com/mescaline.html] [synthesis]
• Client returns from a ceremony with persisting psychotic, manic or perceptual symptoms. Treat as a clinical problem regardless of framing: urgent psychiatric review, risk assessment, involve supports; later integrate meaning (4.8, 4.12, 4.13). Clinical sources list psychosis and persisting perceptual disturbance among mescaline's risks. [source: https://www.drugs.com/mescaline.html]
• Overwhelm during integration (trauma surfaced in the experience). Slow down; use grounding and stabilisation before processing; consider a trauma-focused therapy for the underlying trauma once stable. [synthesis]
• "Stuck": repeated ceremonies replace work on the problem. Name the pattern gently, explore what each ceremony is meant to resolve, and set shared goals that can be checked in daily life. Consider whether use has become avoidance or a substance problem. [synthesis]
• Client believes their illness is sorcery and that therapy cannot help. Do not argue; ask what part of their life you could help with while the healer addresses what they see as the cause (sleep, mood, conflict, work). Negotiate goals from the explanatory model (4.4). [synthesis]
• Fear of a person believed to have sent harm leads to conflict or threats. Assess safety for the client and others; use safety planning; involve family and, if violence is threatened, follow duty-to-protect rules. [synthesis]
• Rupture: client feels you judged or exoticised their tradition. Acknowledge directly, apologise without defensiveness, ask what would repair it; use the CFI Patient–Clinician Relationship module. [source: https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Supplementary-Modules.pdf] [synthesis]
• Disclosure of sexual abuse, coercion or exploitation in a ceremonial or retreat setting. Follow 4.14; the setting does not reduce the seriousness; support reporting choices; avoid implying the client's culture or spirituality caused the harm. [synthesis]
• Minor involved (client is a parent planning to bring a child, or an adolescent reports taking part). Apply child safeguarding procedures; discuss medical risks with the parent; consult your safeguarding lead. [synthesis]
• Therapist's own enthusiasm or scepticism colours the work. Use supervision (4.1). Watch especially for wanting to hear ceremony details for interest's sake. [synthesis]
• Conflicting information about legality. Do not give legal advice; note that mescaline and the cactus are treated differently in international and national law and that national law changes; suggest the client seek legal advice where relevant. [source: https://www.iceers.org/en/news/1971-convention-indigenous-peoples/] [synthesis]
• Commercial "huachuma" offers outside the Andes presented as traditional. Do not adjudicate authenticity for the client; note that Peru's own heritage text distinguishes community curanderismo from mystic tourism and commercial use, and that, in the scholarly literature on mystical tourism, neo-shamanic offers often mix traditions with invented ritual. [source: https://busquedas.elperuano.pe/normaslegales/declaran-como-patrimonio-cultural-de-la-nacion-a-los-conocim-resolucion-vice-ministerial-n-000252-2022-vmpcicmc-2125136-1/] [source: https://www.redalyc.org/pdf/351/35128270007.pdf]

Sources

Web sources:

• Resolución Viceministerial N° 000252-2022-VMPCIC/MC: Declaran como Patrimonio Cultural de la Nación a los conocimientos, saberes y usos tradicionales del cactus San Pedro en las prácticas del curanderismo en el norte del Perú (El Peruano, 2022)
• Ministerio de Cultura del Perú, Informe N° 000008-2022-DPI-PRM/MC (Dirección de Patrimonio Inmaterial, 2022)
• Bussmann RW, Sharon D (2006). Traditional medicinal plant use in Northern Peru: tracking two thousand years of healing culture. Journal of Ethnobiology and Ethnomedicine 2:47 (DOAJ record)
• Douglas Sharon (Wikipedia, for bibliography)
• ICEERS: The 1971 Convention Never Asked Indigenous Peoples (2026)
• ICEERS: Ayahuasca safety profile
• Dinis-Oliveira RJ, Pereira CL, da Silva DD (2019). Pharmacokinetic and pharmacodynamic aspects of peyote and mescaline: clinical and forensic repercussions. Current Molecular Pharmacology 12(3):184–194 (abstract)
• Drugs.com: Mescaline (hallucinogen) uses, effects and hazards
• Drug-drug interactions between classic psychedelics and psychoactive drugs: a systematic review (medRxiv preprint, 2023; authors [uncertain])
• Basset V (2012). Del turismo al neochamanismo: ejemplo de la reserva natural sagrada de Wirikuta en México. Cuicuilco 19(55):245–266
• [APA: DSM-5-TR Cultural Formulation Interview](https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-CulturalFormulationInterview.pdf)
• [APA: DSM-5-TR Section III](https://www.psychiatry.org/File Library/Psychiatrists/Practice/DSM/DSM-5-TR/APA-DSM5TR-SectionIII.pdf)
• [APA: Cultural Formulation Interview, Informant Version](https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Informant.pdf)
• [APA: Cultural Formulation Interview, Supplementary Modules](https://psychiatry.org/File Library/Psychiatrists/Practice/DSM/APA_DSM5_Cultural-Formulation-Interview-Supplementary-Modules.pdf)
• DSM-5-TR webinar slides (Szepe and Fritson), University of Nebraska Medical Center
• Possession, trance and dissociative diagnoses in DSM-5 and ICD-11 (PMC9199574)
• ASWB prep study guide on dissociative disorders (Lewis 2023), University of Missouri System Pressbooks
• ICD-11 6B62 Trance disorder (third-party mirror of WHO text)
• WHO: Frequently asked questions, traditional medicine in ICD-11
• WHO: Implementation of the WHO Traditional Medicine Strategy 2014–2023
• Tanenbaum: Explanatory Models of Illness handout
• Dinos et al. (2017), Cambridge Core, citing Kleinman, Eisenberg and Good (1978)
• Lewis-Fernández R et al. (2017). Feasibility, acceptability and clinical utility of the Cultural Formulation Interview. Br J Psychiatry 210(4):290–297
• Gureje O et al. (2020), COSIMPO trial, The Lancet (PubMed 32861306 record)
• Centre for Global Mental Health: COSIMPO
• Ofori-Atta A et al. Joining psychiatric care and faith healing in a prayer camp in Ghana: randomised trial. Br J Psychiatry 212(1) (year listed as 2019 on the repository; volume 212 is 2018 [uncertain])

Books cited (content not summarised in this guide):

• Kleinman A, Eisenberg L, Good B (1978). Culture, illness, and care: clinical lessons from anthropologic and cross-cultural research. Annals of Internal Medicine 88:251–258.
• Sharon D (1978). Wizard of the Four Winds: A Shaman's Story. New York: The Free Press.
• Joralemon D, Sharon D (1993). Sorcery and Shamanism: Curanderos and Clients in Northern Peru. Salt Lake City: University of Utah Press.
• Sharon D (2000). Shamanism & the Sacred Cactus: Ethnoarchaeological Evidence for San Pedro Use in Northern Perú. San Diego Museum of Man.