What do i do if i think my teenage son has gynecomastia ?

Seek medical consult: The answer depends on the degree of gynecomastia and how much is he aware and affected by it. Anyway, have him seen by a surgeon.

Watchful waiting: Pretty normal most of the time. Usually fat deposited from estrogen. During teenage years, testosterone and estrogen bounce all over the place. Check to see if any lumps, there should not be. Usually goes away when testosterone becomes the dominant hormone. Very rare can be tumor. Easy to get it checked out.

Depends on Situation: If the gynecomastia is severe and/or persistent, surgical treatment may be beneficial. Try to determine whether your son is physically and/or psychosocially affected. Treatment is individualized depending on the specific patient's situation; involves direct excision of glandular tissue, liposuction surgery, and/or occasionally excision of excess skin as well.