While taking a shower I discovered a hard lump about the size of pinky nail on my right buttcheek. Its under the skin as I can feel no cuts or any type of surface damage. It doesnt hurt when I poke at it. Kind of startled me a bit as I have never encountered this type of thing before. Any thoughts on what it could be?
Welcome to Chat Doctor .1. The possible cause could be hair follicular infection with collection within.2.It's an early infective change, possible of increase in size is there.3. Do not scratch or press as it will complicate more and causes dealt in healing.4. At the moment there is no pis or discharge so suggest monitor the lesion / lump if its growing.5. Maintain local hygiene and soft clothing and clean with antiseptic liquids.  6. If pain starts antibiotic treatment will be helpful. Good luck. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you.