Gynecomastia Home A-Z Health Information Health Library A-Z Gynecomastia Overview Gynecomastia is characterised by enlarged breast tissues in males, often due to hormonal imbalances between oestrogen and testosterone. It can occur during puberty, due to certain medications, or because of health conditions like liver or kidney disease. Symptoms Swollen breast tissue and tenderness. Gynecomastia is usually benign and can resolve on its own; however it can cause emotional distress. Diagnosis Physical exam, assessment of medical history, and sometimes blood tests or imaging studies. Treatment Treatment depends on the cause and severity. Options include observation, medications to adjust hormone levels, or surgery to remove excess tissue if gynecomastia persists or causes significant discomfort. Disclaimer: The information in this Health Library is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional with any questions about a medical condition or before starting any treatment. Use of this site and its content does not establish a doctor–patient relationship. In case of a medical emergency, call your local emergency number or visit the nearest emergency facility immediately.