Doc, in the past year both my knees and ankles are often sore like being stabbed by needles, sometimes to the calf. The pain does not keep on appearing, especially when I stand for a long time, wear shoes with my heels, stay in a certain position for a long time or feel stressed by something. Sometimes on the knee, a small reddish spot looks like a swelling. What I want to ask, about what disease? if I go to a doctor which doctor should I go and do what tests? my cholesterol and uric acid are normal. thank you