<s>[INST] Hi,I have a small lump straight behind my ear (where the ear ends and the scull starts)  that looks like a part of a vain and it hurts when I touch it. Its been there now for a few days now, didnt change anywhere, but Im still worried because it looks like a swollen vain and hurts. Before the lump appeared, i had problem with the very same ear because it got blocked every now and then without any reason. Im a 19 years old girl, not over-weighted and I do have naturally low blood pressure. I dont have any serious diseases. Thank you for answering. [/INST] HI, Dear,Thanks for the inquisitive query to Chat Doctor.1-I studied your query in depth.2-In my opinion, this lumps behind your ear crease is due to the infected lemonade -secondary to the boil/ or acne in the out ear-which blocked your same ear few days ago.3-I would advise you to check with ENT/ or General Surgeon, who would treat it under antibiotic cover with NSAIDs, if not responding would plan Incision and Chat Doctor. 4-You are therefore advised to consult a Surgeon. Hope this would solve your query .5-Wellcome for more queries to me On Chat Doctor.6-Thnks once again for your inquisitive query. Have a Good Day.!! </s>