I am 18, 5 6, and 170 lbs.  I have a skin colored bump right above my buttocks.  More recently, however, part of the bump turned red and has begun leaking a bloody pus.  It will sometimes heal up and the bump will appear to shrink.  But eventually it will regrow to normal size and continue to leak bloody pus.  Any insight on the matter would be most appreciated.
Welcome to Chat Doctor .1. It looks like a carbuncle or an abscess in infected status.2. It needs incision and Chat Doctor. 3. An antibiotic treatment after the procedure will heal the area.4. So do not ignore before it complicate - see your doctor as soon as you get your appointment. Anything to ask ? Do not hesitate. Thank you.