<unk>  is almost always secondary to another underlying illness, often a psychiatric disorder. Mood disorders such as a bipolar disorder and depression are the most common etiologies to progress to<unk> . Other psychiatric associations include schizophrenia and other primary psychotic disorders. It also is related to autism spectrum disorders.<unk>  is also seen in many medical disorders, including infections (such as encephalitis), autoimmune disorders, meningitis, focal neurological lesions (including strokes), alcohol withdrawal, abrupt or overly rapid benzodiazepine withdrawal, cerebrovascular disease, neoplasms, head injury, and some metabolic conditions (homocystinuria, diabetic ketoacidosis, hepatic encephalopathy, and hypercalcaemia).
Catatonia
Neuroleptic malignant syndrome
Paratonia
Childhood schizophrenia
Cataplexy
Clonus
Catalepsy
Psychomotor agitation