Hi! One and a half years approximately I discovered one spot under my armpit. ( First 2 pics). First, one more before I realized it was a spot I thought was a bruise from pole sport, so I wasn't worried; it appeared all of a sudden. After a month I realized that it was still there so I took a closer look and saw that it was a spot with some other smaller ones around. I immediately went to the dermatologist and she said it looked like a mole that was forming and I shouldn't be worried, that it didn't look weird, but suggested I should still check it out after some time. I went back home less worried but not convinced because there was some kind of skin texture next to the spot that I thought could be something else. Now, a week ago I looked and I realized that it appeared in other spots around and the skin texture ( like the skin got thicker) has spread (pics 3 and 4). Also, it burns a little bit after I touch or squeeze. Once again I went to the dermatologist for a check-up of all my moles, and an older doctor attended to me this time. And he once again said it was just a mole. I am not convinced, because I can accept that the spot is a mole but why the new spots around and the texture of the skin? I researched other possibilities and I think it could be a hyperpimente type of lichen. I told the doctor and he said even if it could be I shouldn't be worried. That answer didn't make me feel any more secure.
I would like to add that I don't use deodorant and barely shave cause I'm both lucky and barely smell or have armpit hairs. So it's not because of that, my other armpit is completely clear.