Posturing in catatonia involves maintaining a position for an unusually long time, sometimes against gravity. Rigidity refers to increased resistance to movement. Other examination findings include catalepsy and waxy flexibility, in which a position imposed by an examiner may be maintained with a characteristic quality of resistance. These signs require professional interpretation rather than informal testing by relatives.
Catatonia is a syndrome involving marked changes in movement, speech and responsiveness. It can occur with mood disorders, psychotic disorders and medical or neurological illnesses. It is not simply a severe negative symptom, and the presence of catatonic signs requires careful clinical assessment.
Similar-looking movement abnormalities can arise from medication effects, neurological disease or other conditions. Clinicians assess the combination of signs, their onset and the person’s physical state. Pain, joint disease and ordinary resistance also need consideration. Maintaining an unusual posture for prolonged periods can create discomfort, pressure damage and muscle complications. Treatment therefore combines investigation, supportive medical care and specific therapy when catatonia is identified. Forceful attempts to move or repeatedly test someone can increase distress or cause injury. Clear descriptions of observed posture, duration and associated changes are more useful than assuming that the behaviour is voluntary or symbolic.
The quality of resistance during examination can help distinguish movement signs, but interpretation requires training. Pain, fear and joint limitations can alter the response to movement. Observations should therefore be integrated with other catatonic signs and the medical history. A label based on posture alone can obscure a different neurological, musculoskeletal or medication-related problem needing its own assessment.
Further reading: Research record 37039129; Research record 40368005.
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