<unk>  is a rare, but potentially life-threatening adverse drug reaction that results from intentional self-poisoning, therapeutic drug use, or inadvertent interactions between drugs. It is an iatrogenic (i.e. caused by medical treatment) toxidrome. It is most commonly referred to as<unk> , however,<unk>  toxicity or<unk>  toxidrome (from toxic + syndrome)  are more accurate as it reflects the fact that it is a form of poisoning. Rarely it may also be called<unk>  storm.<unk>  is not a spontaneous drug reaction, it is a consequence of excess serotonergic activity at central nervous system (CNS) and peripheral<unk>  receptors. This excess<unk>  activity produces a specific spectrum of clinical findings which may range from barely perceptible to fatal.
Serotonin syndrome
Cholinergic crisis
Neuroleptic malignant syndrome
Heat stroke
Cocaine withdrawal
Decompression sickness
Motion sickness
Foreign accent syndrome