Risperidone-induced angioedema.

Risperidone is a second-generation antipsychotic with common adverse effects, such as extrapyramidal symptoms, weight gain, hyperprolactinemia, and sedation. Angioedema, although generally considered to be uncommon, has previously been documented to occur following administration of some antipsychotics, including risperidone. This report describes a case of risperidone-induced angioedema in an older male patient.