Acute psychosis — a case-based approach

The illustrative case

Our imagined patient is a 22-year-old whose family have noticed them becoming withdrawn over several weeks, sleeping little, and talking about being watched. They now hear voices that others cannot and believe their phone is spying on them. A clinician approaches gently, introduces themselves calmly, and tries to build trust rather than argue with the beliefs. They ask, without judgement, about what the person is experiencing, any thoughts of harming themselves or others, drug or alcohol use, and physical health. Assessment always considers medical causes too, such as infection, high fever, or drug effects, which can mimic or trigger psychosis. In real life this happens with a mental health team; here the story shows the calm, safety-focused approach.

What psychosis is

Psychosis is not a diagnosis in itself but a set of experiences in which someone loses contact with shared reality. The main features are hallucinations — sensing things that are not there, most often hearing voices — and delusions, which are strongly held beliefs that are not true and are not shifted by evidence, such as believing one is being followed or has special powers. Thinking and speech can become muddled and hard to follow. Psychosis can occur in conditions such as schizophrenia or bipolar disorder, but it can also be triggered by severe stress, lack of sleep, some drugs including cannabis and stimulants, alcohol withdrawal, and physical illnesses. Because the experiences feel completely real to the person, arguing rarely helps; calm reassurance does.

Safety first

The most important early task is safety — for the person and for others. A clinician gently asks whether the person has thoughts of harming themselves or ending their life, and whether they feel unsafe or a risk to anyone. They also consider whether the person is able to look after their basic needs. Command hallucinations telling someone to harm themselves, strong suicidal thoughts, or beliefs that put them in danger are serious and need urgent action. For families, staying calm, speaking simply, removing means of harm, and not leaving the person alone all help. If there is any immediate danger to life, the right response is to call 999. Keeping the environment quiet and low-stress reduces fear and agitation.

Getting urgent assessment

First-episode psychosis is a medical urgency because early treatment leads to better recovery, and because risks need managing. In the UK, urgent help can come from NHS 111 (choosing the mental health option), a GP who can arrange an urgent referral, or, in a crisis, the emergency department and 999. Many areas have Early Intervention in Psychosis teams for young people experiencing this for the first time. Assessment looks at the mental state, safety, physical health and any drug use, and rules out medical causes. Treatment usually combines antipsychotic medicine, talking therapy, and support for the person and family. Compassion and hope matter: many people recover well, especially when they get help early rather than struggling alone.

What the case teaches

This made-up story shows that psychosis, though alarming, is a treatable health problem, not a moral failing or something to be ashamed of. The clinician's approach is built on calm, respect and safety: listening without judgement, checking for danger, looking for treatable causes, and getting the right help quickly. For families and friends, the key lessons are to stay calm, take talk of self-harm seriously, avoid arguing about the beliefs, and seek urgent support. Recovery is common, particularly with early treatment and ongoing support. Remember this is general education, not a diagnosis; if you are worried about someone, contact NHS 111 mental health option, Samaritans on 116 123, or 999 if there is immediate danger.