Antineuronal autoantibodies induced paraneoplasic syndrome in schizophrenia spectrum disorders: case report.

Unlabelled: Secondary psychiatric symptoms are usually suspected when there is an atypical presentation of the symptoms or a lack of response to psychotropic medication.

Case Presentation: Our case is about a woman aged 62 years old, with a history of mental disorder who presented psychiatric symptomatology after years of being stabilized by antipsychotics. She was later investigated due to a mass in her breast.