The document discusses Premenstrual Syndrome (PMS), a group of symptoms linked to a woman's menstrual cycle that commonly occurs 1-2 weeks before her period. PMS can range from mild to severe and symptoms vary between women but may include physical symptoms like breast tenderness as well as psychological symptoms like depression or irritability. Diagnosis involves patient history and ruling out other conditions, while treatment focuses on lifestyle changes like exercise and diet as well as potential drug therapies to manage symptoms.