Finding a lump in your armpit can be worrisome, especially if it's painful or appears unexpectedly ... HS can sometimes have the same appearance as acne and pimples, but they are different ...

causes painful bumps under the skin, typically on skin folds, like the groin area, armpits, inner thighs, buttocks, and under the breasts. Bumps often begin as small pimple-like spots that grow ...

Others make their arrival known long before they ever come to the surface by causing a painful lump. The latter is typically ...