Drugs that can trigger an<unk>  include neuroleptics (such as haloperidol, chlorpromazine, fluphenazine, olanzapine), carbamazepine, chloroquine, cisplatin, diazoxide, levodopa, lithium, metoclopramide, lurasidone, domperidone, nifedipine, pemoline, phencyclidine ("PCP"), reserpine, and cetirizine, an antihistamine. High-potency neuroleptics are the most common cause. Other causes can include aromatic L-amino acid decarboxylase deficiency, postencephalitic Parkinson's, Tourette's syndrome, multiple sclerosis, neurosyphilis, head trauma, bilateral thalamic infarction, lesions of the fourth ventricle, cystic glioma of the third ventricle, herpes encephalitis, kernicterus and juvenile Parkinson's disease. Patients with procyclidine addiction or craving may simulate signs of EPS to receive procyclidine.
Oculogyric crisis
Myxedema coma
Neuroleptic malignant syndrome
Heat syncope
Diabetic coma
Epidemic dropsy
Oculocerebrorenal syndrome
Photosensitive epilepsy