My daughter is experiencing a mole that has been under her left arm pit along the bra line since she was a little girl. it became inflamed recently with pus on top of it. i can provide a picture. thank you ?

Not here: This public HT site offers medical advice on general questions. It is not a chat room and does not have any feature that allows us to see pictures. All we can assess is the info you describe in your post. As a general response, when simple moles become troublesome, like in belt or bra lines you can have them removed. An infection might push this as more necessary. Some GP's or a dermatologist