Chronic mania is a mental health disorder that has been described by various psychiatrists in the past but currently is not a part of nosology. Robust epidemiological data for chronic mania are lacking with regard to its prevalence and clinical features.The present case report is of a 48-year-old male with a six-year history of mood and psychotic symptoms, based on which differential diagnoses of schizoaffective disorder (manic type), schizophrenia, and mania with psychotic symptoms (with chronic course) were made. The diagnosis of chronic mania was confirmed considering the predominance of fluctuating mood symptoms along with psychotic symptoms, lack of remission, and chronic course of illness. Antipsychotics were initially started for six weeks, to which the patient demonstrated a minimal response. A mood stabilizer was added to the regimen, leading to significant improvement, and the patient was discharged.According to existing literature, patients with chronic mania present with severe illness, the presence of psychotic symptoms, and socio-occupational impairment, which was also noticed in this case. The prevalence of chronic mania among patients with bipolar disorder is approximately 13-15%, which constitutes a significant proportion of known mental illnesses. Therefore, chronic mania should be added as a distinct clinical entity in the existing nosological systems.