Conversation: The conversation between human and AI assistant.
[|Human|] Hi, a few days ago I noticed a hard, sore, immobile lump on the back of my head.. on the right side, right where the normal bumps of your skull are. My family says they cannot feel it aside from the normal skull bumps, but I know its not just the normal bump. It seemed to have appeared overnight and is very tender and sore. What could this be?
[|AI|]  Hi, dairy have gone through your question. I can understand your concern. You may have some Desmond cyst or skin adnexal tumor or some other mass.  You should go for fine needle aspiration cytology or biopsy of that lump. It will give you exact diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health.