Conversation: The conversation between human and AI assistant.
[|Human|] Hi, I have a small (3-4mm) lump under the skin at the base of my index finger where it meets the palm. It is not painful and cannot be seen. I m 27 years old and don t think i ve injured my hand. I do a lot of typing though (work in IT). It feels like the lump is next to, or part of, that finger joint, and as i straighten out my finger, it feels like it retracts slightly into the joint. Not completely though - it s still there even then. Quite hard to feel though - you have to use your finger nail and rub up and down the joint. If you use your finger tip, or rub the joint sideways, you cannot feel it. I definitely don t have it on any other fingers.
[|AI|]  Hi, Welcome to Chat Doctor. I studied your query. I understood Your concerns. Based on facts of your query, Dear you seem to be confused, or it could be typing mistake-that your lump seems to be painless from your history. In My opinion you seem to have a Ganglion Cyst of the base of the Index Finger, or tendon sheath or from the joint of the base of index finger. Get the USG/CT study and this would help you to treat it. Treatment-Is by Surgical Excision of the Ganglion Cyst, which is coming from joint could recur, hence through excision is needed. Hope this reply would satisfy and would help you to plan treatment with the right consultant doctor. Contact with a Followup Premium question to ME. Will appreciate your Hitting thanks and writing excellent review comments to help needy patients like you. Good Day!! Chat Doctor. Senior Surgical Specialist M.S. Genl-CVTS