I am 20 years old, with a 1 year old child. i have had reoccurring dark purple lumps under my armpit for a few months now. I have one now that is VERY painful and hard. last night i couldnt take the pain anymore, and i squeezed it--blood exploded out of it. what is this? there was no pus, only blood.
Hi.based from your description, it could be folliculitis. This usually occurs after shaving, when hair is accidentally pulled out and inflammation and infection occurs, or when there's an irritation or an inflammatory reaction from chemical contents of your deodorant. Inflammation from uninfected follicles will subside in a few days time on its own. If the lesion, gets infected, a cyst or an abscess formation (hi Chat Doctor.  If symptoms persist, a consult with your general surgeon is best for clinical evaluation. Management (medical and/or surgical) will be directed accordingly. Hope this helps. Good day!!~