Schizophrenia Spectrum and Other Psychotic Disorders
Catatonia
Catatonia is a severe psychomotor syndrome. It can be manifested by deep immobility and minimal response, but also by intense, purposeless agitation, strange postures or imitation of speech and movements. It is not synonymous with schizophrenia and is not a metaphor for a "frozen soul".
It may be associated with mood or psychotic disorders, autism and other neurodevelopmental conditions, but also with neurological, autoimmune, infectious, metabolic or drug causes. Because it can lead to dehydration, thrombosis, hyperthermia, and other life-threatening complications, it needs urgent medical recognition and treatment.
What Is Catatonia?
Catatonia involves a marked disturbance in movement, initiation, and responsiveness to the environment. The presentation is not limited to immobility: the same person may alternate between stupor and mutism and periods of agitation. In DSM-5-TR, catatonia may be specified in association with another mental disorder, diagnosed as catatonic disorder due to another medical condition, or diagnosed as unspecified catatonia when the cause is not yet clear. Malignant catatonia includes fever, autonomic instability, and severe systemic compromise and is a medical emergency.
Key Features and Signs
Clinical presentation is dominated by a combination of psychomotor signs, such as:
- Stupor: no psychomotor activity and no active engagement with the environment.
- Catalepsy or waxy flexibility, when the body passively maintains a position or shows mild uniform resistance to changing posture.
- Mutism, negativism or very limited response to instructions and external stimuli.
- Posturing: spontaneous maintenance of a posture against gravity; this is distinguished clinically from catalepsy and waxy flexibility.
- Agitation that is not influenced by external stimuli and may be exhausting or dangerous.
- Echolalia, i.e. imitation of another's speech, or echopraxia, i.e. imitation of their movements.
- Fever, marked rigidity, tachycardia, changes in blood pressure, or altered consciousness, which raise concern for malignant catatonia or Neuroleptic Malignant Syndrome.
How It Is Diagnosed
The diagnosis is clinical and is made in an emergency medical context. It requires systematic observation, examination, information about the abrupt change from the usual level, and investigation of psychiatric, neurological, infectious, autoimmune, metabolic, and drug causes.
- At least 3 of 12 psychomotor features are required: stupor, catalepsy, waxy flexibility, mutism, negativism, posturing, mannerism, stereotypy, agitation not influenced by external stimuli, grimacing, echolalia, or echopraxia.
- The assessment considers whether catatonia accompanies another mental disorder or is a direct consequence of a medical condition. Medications, substances, and abrupt discontinuation of certain regimens also need review.
- Delirium is primarily characterized by an acute, fluctuating disturbance of attention and awareness. It can overlap or co-occur with catatonia, so the distinction is not absolute.
- In an autistic person or a person with chronic stereotypic patterns, the diagnosis requires a clear and significant change from their baseline functioning.
How It Can Affect Daily Life
Catatonia can make eating, drinking, speaking, moving, and safe self-care impossible. Prolonged immobility increases the risk of thrombosis, pressure injuries, infections, and muscle contractures, while agitation can cause exhaustion or injury. Lack of response should not be interpreted as stubbornness or deliberate refusal. Professionals and caregivers should speak respectfully to the person as though they can understand what is being said and protect their dignity.
Causes and associated conditions
Catatonia does not have a single cause. It often occurs with Bipolar Disorder, Depressive Disorders, or psychotic disorders, but it may also be associated with autoimmune encephalitis, epilepsy, infections, electrolyte or metabolic disturbances, structural brain disease, substances, or medications. A sudden change in an autistic person's behaviour requires medical evaluation. Investigation of the underlying cause proceeds alongside treatment of the syndrome and must not delay emergency care.
Similar or Co-occurring Conditions
Some conditions resemble or overlap with catatonia and require urgent distinction:
- Neuroleptic Malignant Syndrome (NMS) is a rare, life-threatening reaction to dopamine-blocking medication. It may include severe muscle rigidity, hyperthermia, altered consciousness, autonomic instability, and elevated creatine phosphokinase (CPK), an enzyme that rises with muscle injury.
- Delirium may be hyperactive or hypoactive and co-occur with catatonic episodes. Fluctuating attention and awareness are central features of it.
- Nonconvulsive status epilepticus, encephalitis, severe metabolic disorders, and serotonin syndrome can cause a similar presentation.
- Parkinsonism, dystonia, akinetic mutism and functional neurological disorder need neurological differential diagnosis.
- Chronic stereotypy or impaired speech in autism is not catatonia without clear deterioration from the previous level.
Treatment and Support
Treatment is done in a an appropriate hospital or specialist medical setting and proceeds along with the investigation of the cause:
- Supportive medical care for fluids, nutrition, prevention of blood clots and pressure sores, fever, breathing and other complications.
- Lorazepam or another appropriate benzodiazepine is often first-line therapy, dosed and monitored only by the medical team.
- Electroconvulsive therapy (ECT) is effective and may be needed rapidly in severe, malignant, or unresponsive catatonia.
- The underlying psychiatric, neurological, autoimmune, infectious or metabolic cause is treated simultaneously.
- Antipsychotics may exacerbate active catatonia or be associated with NMS. Starting, changing or stopping them is the decision of the medical team and is not done without guidance.
When to Seek Help
New immobility, mutism, unusual postures, unexplained agitation, imitation of movements, or sudden inability to eat or perform self-care require immediate hospital assessment. Fever, severe rigidity, confusion, or unstable blood pressure and pulse after an antipsychotic medication are especially urgent. Do not force the person to move or eat, and do not change medication without medical guidance.
Frequently Asked Questions
Does catatonia occur only in schizophrenia?
No. It is often associated with mood disorders and may also occur in other mental, neurodevelopmental, or medical conditions. The cause needs investigation in each case.
Can a person with catatonia hear what is said to them?
The person may understand more than they can demonstrate. Guidelines therefore recommend speaking to them respectfully, explaining what is being done, and not interpreting nonresponse as deliberate refusal.
Is neuroleptic malignant syndrome the same as catatonia?
No. There is considerable overlap, particularly with malignant catatonia, but Neuroleptic Malignant Syndrome is associated with dopamine blockade or discontinuation of dopaminergic therapy and requires specific emergency management.