Conversation: The conversation between human and AI assistant.
[|Human|] Yesterday I noticed a fairly large soft lump just below my knee cap.  There is no pain or reddness, and I had not bumped it.   When I woke from sleep the lump had decreased in size, but once up and walking around, it came back.  What do you think is the problem?
[|AI|]  Hi this is Chat Doctor.  Thanks for the opportunity to help you.it is not very clear from your description whether it is outside or beneath your knee joint, so will guide you for both the conditions:if it is beneath the knee joint it can be due to gout or rheumatoid arthritis.in that condition you can do a total count and test for serum uric acid tests and also x-Ray of knee joint. If serum uric acid is more and total count is more than you are suffering from acute onset of the abovementioned conditions. If gout or arthritis is confirmed, consult a rheumatologist. He will prescribe ma