Erotomania is a type of delusion in which the affected person believes that another person, usually a stranger, high-status or famous person, is in love with him or her. The illness often occurs during psychosis, especially in patients with schizophrenia, delusional disorder or bipolar mania.

During an erotomanic episode, the patient believes that a secret admirer is declaring his or her affection to the patient, often by special glances, signals, telepathy, or messages through the media.