tardive dysmentia
a behavioral disorder associated with long-term use of antipsychotic drugs and characterized by changes in affect, social behavior, and level of activity. Symptoms may include an inappropriately loud voice and loquaciousness, euphoria, intrusive behavior (including invasion of others’ privacy), and thought disorder. In addition, the individual may exhibit episodes of social withdrawal interspersed with episodes of hyperactivity, as well as excessive emotional reactivity and explosive hostility. The condition is considered the behavioral equivalent of tardive dyskinesia. Also called iatrogenic schizophrenia; tardive psychosis.