[Othello syndrome--jealousy and jealous delusions as symptoms of psychiatric disorders].

Jealousy as a psychopathological symptom has long been neglected by psychiatric research. Despite the obvious difficulty to prove or exclude the infidelity of a spouse, delusional jealousy can clearly be considered as pathological, but the evaluation and classification of non-psychotic jealousy remains a challenge. Typical psychopathological symptoms which usually accompany pathological jealousy and the prevalence of delusional jealousy in different psychiatric disorders are described. In delusional jealousy neuroleptic treatment is necessary. Positive results have been reported especially with pimozide. For non-psychotic jealousy various forms of psychotherapy have been advocated to improve self-esteem or to treat other psychological disorders. Other possible interventions are alcohol therapy or family counselling. Many studies show that jealousy is a frequent motive in homicide with the spouse being nearly exclusively the victim. Finally some forensic aspects of jealousy are discussed.