Abstract

Quetiapine is an atypical antipsychotic used not only in cases of schizophrenia and bipolar disorder but also in the treatment of major depression. Given its pharmacological profile, extrapyramidal syndromes are rarely observed; therefore, it is often the drug of choice for patients developing extrapyramidal syndromes. It is also known to be frequently prescribed in clinical practice for treating primary and secondary insomnia. This report presents a case of tardive dyskinesia occurring in the presence of predisposing factors in an elderly patient with major depression whose insomnia was treated with low-dose quetiapine.

Key words: Tardive dyskinesia, Major depressive disorder, Quetiapine, Insomnia