Conversation: The conversation between human and AI assistant.
[|Human|] I have a lump the size of a hardball on my left buttock ( near the rectum) but not in or on. It very very tender to the touch its also inflamed. Its been this way for about 4 days and hurts 24/7 feels like its coming to a head but is deep under skin. Please help!!!
[|AI|]  Welcome to Chat Doctor .1. Most possible cause is (carbuncle / fur uncle) hair follicular infective causes - bacterial infection.2. The location and symptoms suggest the acute and infective causes.3. I would suggest seeing your GP as soon as possible, depending on the size the treatment varies (starting from a course of antibiotics to a small incision and Chat Doctor. You can not neglect this, as there are definitive possibilities to get complicated (sinus formation / fistula formation)5.Take immediate action, maintain local hygiene, do not itch the area. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you.