For most of the twentieth century, catatonia was thought of as a subtype of schizophrenia — a person frozen in place, mute, holding strange postures for hours. Modern psychiatry sees it differently. Catatonia is now understood as a neuropsychiatric syndrome that can occur in schizophrenia, severe mood disorders (especially bipolar depression and mania), autism, and a long list of medical conditions including infections, autoimmune encephalitis, and metabolic derangements. It is dangerous, frequently missed — and one of the most treatable conditions in psychiatry.
Catatonia is a syndrome of abnormal movement, behaviour, and responsiveness that often resolves within hours to days when treated with benzodiazepines or electroconvulsive therapy (ECT).
What catatonia looks like
The DSM-5-TR lists 12 features, and a person needs three or more to meet criteria. Common signs include:
- Stupor — little or no movement, no response to surroundings.
- Mutism — minimal or absent verbal response.
- Posturing — holding awkward postures against gravity for long periods.
- Waxy flexibility — limbs can be moved into positions and remain there.
- Negativism — opposition or no response to instructions.
- Echolalia / echopraxia — repeating others' words or movements.
- Stereotypies — repetitive non-goal-directed movements.
- Excitement, agitation, or grimacing — sometimes oscillating with stupor.
Catatonia exists on a spectrum from retarded (slowed, stuporous) to excited (agitated, hyperactive). Both are catatonia, and both can become life-threatening.
How common is it?
A systematic review by Solmi and colleagues (Schizophrenia Bulletin, 2018) estimated that roughly 9% of acutely ill psychiatric inpatients meet criteria for catatonia. It is more common in mood disorders than in schizophrenia, contrary to historical assumption. Many cases are missed because clinicians look for the classic frozen-statue picture and overlook the milder, more common presentation.
Why it's a medical emergency
Someone shows sustained mutism, refusal to eat or drink, holding rigid postures, fever, autonomic instability (very high blood pressure or heart rate), or sudden inability to respond. Untreated catatonia can lead to dehydration, blood clots, pressure injuries, aspiration pneumonia, and a malignant form (see below) that has a mortality of around 10–20%.
Malignant catatonia
The most dangerous form, marked by fever, autonomic instability, rigidity, and altered consciousness. It overlaps clinically with neuroleptic malignant syndrome (NMS) and serotonin syndrome and is treated as a medical emergency requiring intensive care, benzodiazepines, and often ECT. See our guide to neuroleptic malignant syndrome for the differential.
The lorazepam challenge
The classic diagnostic and therapeutic test is the lorazepam challenge: a small intravenous or oral dose of lorazepam is given, and the patient is observed. Roughly two-thirds of patients with catatonia improve dramatically — sometimes speaking and moving normally — within 30 to 60 minutes. The response is so reliable that it is considered both a diagnostic confirmation and the first line of treatment.
Maintenance benzodiazepine doses for catatonia can be unusually high (sometimes 8–24 mg of lorazepam per day, divided), and patients tolerate them well because the catatonia itself protects against sedation.
Electroconvulsive therapy (ECT)
For patients who do not respond to benzodiazepines, or for those with malignant catatonia, ECT is the next step and is highly effective — response rates of 80–100% are reported in the literature (Pelzer et al., Acta Psychiatrica Scandinavica, 2018). ECT is also typically the treatment of choice when catatonia is life-threatening from the outset. Read our overview of ECT for schizophrenia.
What about antipsychotics?
This is where things get tricky. Antipsychotic medications can worsen catatonia and may even precipitate malignant catatonia or NMS. In acute catatonia, antipsychotics are often paused, and benzodiazepines or ECT are used until the catatonia resolves. Once stable, the underlying psychiatric disorder is treated — sometimes with a cautious reintroduction of an antipsychotic, often choosing one with lower D2 affinity such as a partial agonist.
Looking for medical causes
Because so many medical conditions can cause catatonia, a thorough workup matters. The Bush-Francis Catatonia Rating Scale is widely used to track severity, and clinicians typically order:
- Basic labs (electrolytes, kidney and liver function, calcium, magnesium)
- Inflammatory markers and CRP
- TSH (thyroid)
- Brain imaging (MRI when possible)
- EEG to look for non-convulsive seizures
- Lumbar puncture and autoimmune panels (e.g., NMDA receptor antibodies) when encephalitis is suspected — this is increasingly recognised, especially in young patients
A 2018 review in The Lancet Psychiatry by Rogers and colleagues highlighted how often anti-NMDA-receptor encephalitis presents with catatonia and psychosis and is misdiagnosed as schizophrenia.
Recovery and the road back
For most patients, catatonia responds quickly to treatment, sometimes within a single day. The harder work is treating the underlying disorder — major depression, bipolar disorder, schizophrenia, or the medical condition driving it. Recurrence is possible, particularly in mood disorders, and a written plan for early identification can prevent future crises. Families often describe the response to lorazepam as "getting their person back" — which is exactly what good catatonia care looks like.
Resources
- NIMH — Schizophrenia overview
- Solmi et al., 2018 — prevalence of catatonia (Schizophrenia Bulletin)
- Rogers et al., 2018 — Catatonia and the immune system (Lancet Psychiatry)
This article is for educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified mental health professional. If you or someone you know is in crisis, call or text 988 in the US, or your local emergency number.