Polycystic Ovarian Disease (PCOD), also known as Polycystic Ovarian Syndrome (PCOS), is characterized by multiple cysts in the ovaries and hormone imbalance, leading to symptoms like irregular menses, weight management difficulties, and infertility. Its causes are not fully understood but involve hereditary factors, insulin resistance, and obesity, with treatment options including weight loss, ovulation induction, and surgery. Diagnosis is based on irregular cycles and can be confirmed through ultrasound and blood tests.