Conversation: The conversation between human and AI assistant.
[|Human|] What may cause a lump behind my left ear? It s about the size of a quarter and has no pain. Not obvious except upon palpation. I also have pain on my left eye (not the lid but the bottom) when it is touched or blinking excessively. My throat is somewhat sore, more so on the left side, however it isn t exactly a sore throat as one you have when you have a cold. Could it be sinuses or do I need to see a doctor?
[|AI|]  Hi. Thanks for your query. Seeing a Doctor, preferably an ENT Specialist is always a better idea, as he is the only one who can do a clinical evaluation, ENT Endoscopy and other relevant investigations like FNAC, and get the proper treatment done. The commonest cause of non-tender swelling behind the ear is a lymph node. The pain in the lower eyelid can be a cyst or so. Sore throat can be due to a local infection and all the things may not be related as per your history, but the treatment remains almost same for all. Get the treatment started and you will be OK. I hope this answer helps you.