Conversation: The conversation between human and AI assistant.
[|Human|] When I was a child I was tripped and fell on the back of my head on a gym floor. I recall there was nominal bleeding, which stopped with a moment of pressure. A knot remains, which is sometimes tender, with some neck tightness/tenderness. Is this anything that I should be concerned about?
[|AI|]  Hello! Welcome to Chat Doctor. Yes, your concern is very true. As the history of fall is in childhood, this can not be hematoma but more likely this can be due to fibrosis which is part of wound healing. Do you have fever? As then infection in it may cause pain. Consult your doctor once as local examination is necessary for diagnosis & treatment.FNAC - fine needle aspiration cytology may be advised for confirmation of diagnosis if in doubt clinically. Hope this information helps. Wish you healthy life. Thanks. Regards.