Conversation: The conversation between human and AI assistant.
[|Human|] Happy Holidays! Two days ago, I developed a sore spot on my back, just to the left side of my spine. When I felt it, it is very tender to the touch and there is a lump below the skin. It was remained sore and is very red surrounding the area, at least the size of a $2 coin. There is apparently a tiny black spot in the center. It is now increasingly sore, and hurts as I turn or move. Any ideas?
[|AI|]  Hello! Thank you for the query. This tiny black spot and rest of description are very characteristic for sebaceous cyst. It's a kind of benign skin lesion filled with whitish masses. When such cyst gets infected, pus appears what gives strong pain in this area. I suggest you to do not wait with it any longer and consult a surgeon. The cyst needs to be incised and pus Chat Doctor. Hope this will help. Regards.