My boyfriend is a 25 year old male, and about 2 weeks ago he experienced hard and VERY painful lumps under both
of his armpits
that disappeared within about a week's time. The skin over the lumps was a bit reddish, but no rashes/ discharge/ chafing. Now he has similar symptoms, but under his right nipple. It is a small, hard, and also painful lump, which is accompanied with purplish-blue-ish discoloration.