Menstrual psychosis is a rare entity, reported mostly as case studies in the medical literature. It presents with an acute onset of psychotic symptoms lasting for a short duration in a previously normal patient and occurring in rhythm with her menstrual cycle. It is usually associated with complete recovery in between episodes. This case series elaborates three case studies which have met the modern classification of this disorder and responded adequately to treatment. Reporting this series will help us to recognize and explore the role of hormonal changes related to the menstrual cycle on the mental health of women.