Conversation: The conversation between human and AI assistant.
[|Human|] My husband has a quarter-size soft lump on side of his head near his ear. Its been there for a long time.  It doesnt hurt but feels like it has fluid in it.  Our doctors only reply whenever asked is that its nothing to worry about.  What is it? He had one on the other side of is head for years but it went away.
[|AI|]  Thanks for your question on Chat Doctor. I can understand your husbands situation and problem. Fluid filled lump near ear can be due to 1. Infected sebaceous cyst with pus inside 2. Lymph node enlargement with necrosis and cessation. 3. Infected blister. Etc. So better to consult doctor and get done clinical examination. Also get done ultrasound examination of swelling to determine its exact size and content. If pus is there then he needs needle aspiration and microscopic examination of pus. He may need antibiotics. So better to consult doctor and discuss all these.