Medically reviewed by Kashif J. Piracha, MD Armpit pain has many causes. Muscle strain and rashes are common minor conditions. Nerve compression and infections are more serious conditions. Swollen ...

Hidradenitis suppurative (HS) is a chronic condition that causes painful bumps to develop under the ... for HS in the armpits. However, a doctor can create a plan to reduce pain and lessen outbreaks.

In the 10th grade, Selina Ferragamo noticed large, red bumps on her groin ... until she noticed the same cysts forming under her armpits years later. By the time she was in college, she started ...

A painful bump on your skin could be anything ... show up in areas where the skin rubs together like armpits, groin, inner thighs, and under breasts. It may start out mild with just slight ...