What is it?

Breast hypertrophy in men, or gynecomastia, is an increase in the amount of breast gland tissue. Gynecomastia is typically caused due to a hormonal imbalance- an increase in estrogen levels and decrease of testosterone levels, or blockage of its effect. Gynecomastia is normally seen in newborn who are still affected from the mother’s hormones, boys in puberty and older men. It can affect one or both breasts. Many medications can cause gynecomastia such as anti-androgens, anabolic steroids, AIDS medications (Sustiva) , ADHD medications (Adderall), Valium, tricyclic antidepressants, antibiotics and more. There are also some medical conditions that can cause breast hypertrophy such as hypogonadism, tumors, hyperthyroidism, kidney failure, liver failure and malnutrition. Alcohol may also cause this phenomenon.

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Hypertrophy of breast.

Additional names

This group contains additional names:
- Gynecomastia
- Macromastia
- Gigantomastia

Signs & symptoms

Gynecomastia symptoms may include pain, swollen breast tissue, and tenderness in the nipples.


Diagnosis of gynecomastia is based on symptoms review and medical exam. Further tests may include blood tests, mammograms, CT and MRI scans, testicular ultrasound and tissue biopsy.


Most cases of gynecomastia do not require any treatment, If it’s caused by underlying conditions, it should be treated and if medications cause it it may be recommended to stop taking them. When treatment is required, it includes medication and surgeries to remove excess breast tissue.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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