Does gynecomastia happen during puberty? does it go away after sometime? how much time does it take? what to do to make it go away ?

Most of the times---: Most of the gynaecomastia occurs during puberty - and, most of them go away by itself within three years --- if it does not go away, then surgery may be the answer.

Depends : Roughly half of males go through transient nipple enlargement on one or both sides at the onset of puberty.Most resolve within 6m to a year, it is considered normal.A few will have persistent or dramatic gynecomastia. It can erode someones self concept , surgery is helpful for those who don't clear up after a couple of years.