This section describes a group of major adverse reactions associated with use of psychiatric medications. Minor adverse reactions and side effects are outlined on the pages of the respective medications. Although…

Serotonin syndrome can occur when multiple medications that alter serotonin metabolism are used.

Classically, this syndrome is produced when other serotonin-altering medications are used with MAOls.

This syndrome, which can be life-threatening, consists…

TD is a movement disorder that develops with longterm neuroleptic use; rarely, especially in the elderly, onset may not be as delayed. TD consists of constant, involuntary, stereotyped choreoathetoid movements most frequently confined to…

NMS is an idiosyncratic and potentially life-threatening complication of antipsychotic drug use.

Symptoms of NMS may develop gradually over a period of hours to days and can often overlap with symptoms of…

EPS, also known as neuroleptic-induced parkinsonism, consist of the development of the classic symptoms of Parkinson’s disease but in response to neuroleptic use. The most common symptoms are rigidity and akinesia, which occur in…