One-session treatment for specific phobia

Domain II · Behavioural & cognitive · Lars-Göran Öst · 1989

What it is

OST is a short, intensive cognitive-behavioural treatment for a single specific phobia (for example animals, blood-injection-injury, enclosed spaces, flying, dental or pill-swallowing fears). It has two parts: a roughly 1-hour functional assessment, then one massed exposure session of up to about 3…

Format

• OST is a single therapy package, not a multi-phase programme. The developers describe the phases below. The session counts are those used in the trials.
• Delivery: individual is standard. Small-group OST (groups of 3–4 and 7–8) has been run for spider phobia by Öst, and large-group variants exist, but individual OST outperformed group OST on behavioural approach tests. Ollendick suggests a stepped-care place for OST: bibliotherapy first, then OST,…

Questions to explore with your client

• What drew you to it, and what are you hoping it will change?
• Is there physical contact? Was it explained beforehand, and do you feel free to say no or stop at any point?
• Does it involve intense or unusual breathing? Have you been told about the medical conditions for which that is not advised?
• Is it a group, retreat or community? How do they respond if someone wants to leave or raises a concern?
• Does it use a device, heat, cold, water or a physical procedure? Has a medical professional checked that it is safe for you?
• Who runs it, and what training or registration do they hold?
• What actually happens in a session or meeting, and how often?
• What does it cost, and is there pressure to commit to more?
• How do you feel afterwards, in the hours and days that follow?
• Does it fit with, or clash with, the work we do here?

What practitioners of it watch for

• Partial responders who need stepped-up care.
• Lapses into old avoidance. Check at follow-up.
• Breathing used as a safety behaviour that blocks learning. Fade it.
• Distress that is sensory rather than phobic. Separate the two in assessment.
• Gains that do not transfer to the real stimulus. Plan real-life self-exposure.

When to involve someone else

• New or worsening physical symptoms, or advice to stop or change prescribed medication: involve the client's doctor or prescriber.
• Signs of coercion, isolation from family and friends, escalating costs or secrecy: discuss openly and consider safeguarding.
• A crisis or thoughts of suicide: follow your crisis protocol. In the US, call or text 988; in the UK and Ireland, Samaritans on 116 123.

Drawn automatically from the guide's own sections. Stay curious: neither endorse nor dismiss what the client values, and check anything that matters against the full guide and its sources. Not medical advice.