Two days back, I felt a stiffening pain around my right knee,as a result of which I could not stamp my right leg in usual posture. Yesterday, I could see a swelling around my right knee. while pressing around the knee. I realized a painful sensation at one point adjoining the knee-ball surrounding the right knee area. I consulted an Ortho surgeon. During the blood test, everything, including uric acid, was found normal. X-ray was normal. Anyhow, he prescribed some medicines for 10 days. What would be the actual cause for such symptoms. Previously, I had similar pain in my left wrist joint for some times. It itself got cured after 1 month. What would be the reasons for this complaint?