Conversation: The conversation between human and AI assistant.
[|Human|] i have a ping pong ball size knot on my head on the left side closer to the back and higher then my ear. ive had the knot for several years but it was at least 4 times smaller and has grown to its present size in the last few months. its extremely tender and itches like crazy. the hair that was growing on it has a singed feeling to it and its all crinkled. occasionally i have mild pains that shoot through my head around the area. my insurance clears on oct. 1st and ill probably have to wait another couple weeks to see a dr. any idea of what it could be???
[|AI|]  Hi thanks for your question. The exact diagnosis of this swelling on your head be can be made by examining this swelling by a physician. Most probably this swelling could be a sebaceous cyst or a lipoma (fatty tissue swelling). Increased in size and little pain could be due development of infection in it. Consult a physician who may perform physical examination of this swelling and may advise you certain investigations like FNAC (fine needle aspiration cytology) to reach at correct diagnosis as what exactly this swelling is Hope this answers your question