What screening is for
Screening exists to answer three questions. Is there something in this person's medical history that makes an intense physiological and psychological experience dangerous. Is there something in their psychiatric history that makes it likely to destabilise them. Is this the right moment in their life for it.
The third question is the one most often skipped, and it accounts for a large share of the difficulty that follows. A person can be medically clear and still be badly placed to do this in the month their mother died or the week they lost their job.
Who should conduct it
Screening should be conducted by someone competent to understand the answers, and structurally separated from the sale wherever an organisation is large enough to do so. Where it is not, the conflict has to be named out loud and compensated for by handing genuinely borderline cases to an outside clinician.
It should also be completed before payment is taken, or under a written full-refund guarantee. A participant who has already paid a non-refundable deposit has a financial incentive to shade their answers, which defeats the purpose of asking.
Cardiovascular history
Many of these practices place real load on the cardiovascular system, through the experience itself and through the fear, breathing, and physical activation around it. Relevant history includes heart disease, arrhythmias, uncontrolled high blood pressure, previous cardiac events, stroke, aneurysm, and family history of sudden cardiac death.
Anyone over forty who has never been assessed, and anyone with a history in this area, should have a current medical opinion before participating. A recent physical examination and, where indicated, an ECG is a reasonable expectation and is routinely skipped.
Psychiatric history
A personal or first-degree family history of psychosis, schizophrenia, or bipolar disorder is a serious consideration and is treated as an exclusion by most careful organisations. Intense altered states can precipitate an episode in someone predisposed, and the consequences are long-lasting.
Other history that changes the conversation: previous psychiatric hospitalisation, current suicidal thinking, active eating disorder, dissociative disorders, severe untreated PTSD, and recent significant self-harm.
None of these is automatically disqualifying in every case, and a blanket answer is not the point. The point is that they all require a clinical opinion rather than a facilitator's judgement.
Medications and interactions
Medication review is the most technical part of screening and the part most often done badly. Several common classes of medication interact meaningfully with these practices, including antidepressants, mood stabilisers, antipsychotics, stimulants, and some pain and migraine medications. Interactions can range from blunting the experience to genuinely dangerous.
Two rules cover most of the risk. First, the complete list has to be disclosed, including supplements, occasional use, and anything taken without a prescription. Second, no facilitator should ever advise someone to stop a psychiatric medication. That conversation belongs with the prescriber, because stopping carries its own risks of relapse and withdrawal, and those risks are routinely minimised by people who would like the person to attend.
Life circumstance and timing
Situations that usually warrant a not right now rather than a no:
- A bereavement within the last few months.
- Acute crisis: a divorce in progress, a job just lost, a housing situation that is unsafe.
- Pregnancy or breastfeeding.
- Active substance dependence that has not been assessed.
- No support network at home and no willingness to arrange one.
- Attending under pressure from a partner, a friend, or a community.
- Several ceremonies already this year with no integration between them.
The questions people underanswer
Experienced screeners learn to ask these twice, in different words, later in the conversation.
- How much do you actually drink in a week.
- Has anyone in your family ever had a mental health crisis, been hospitalised, or been described as having had a breakdown.
- What medications have you taken in the past year, including anything short-term.
- Have you ever been told by a doctor to avoid something like this.
- Who suggested you do this, and what would happen if you did not.
People do not lie so much as they simplify. The follow-up question is where the real history lives.