The neuroleptic malignant syndrome is an uncommon, severe illness that consists of fever, muscular rigidity, and stupor. Various neuroleptics have been associated with the disease. A detailed neurological, medical, and neuropathological evaluation of this case was performed. Presumably, the syndrome is secondary to biochemical dysfunction of the basal ganglia and possible of the hypothalmus.

We present the case of a 35-year-old man who developed symptoms of the neuroleptic malignant syndrome (NMS) after taking prescribed, moderately high, therapeutic doses of haloperidol. When brought to the emergency department, he was comatose, hypotensive, and had rigid muscle tone and a core body temperature of 42.2 C. Although initial treatment was supportive, intubation, ventilator support, a...