Hi Doctor, From August 16, I got back pain lower back pain, little pain in knee, I could not fold my knee. Later I went to rheumatology doctor, he said I have sondyoarthrtiis. That doctor gave Zycel 200 mg and Saaz 1000 mg for a month, later I did not any back pain till now, but I have still knee pain, sometimes it get swelling too at my knee. Noww I consultacted new ortho doctor he says its not sondyoarthrtiis, but he gave RAZBERG ACE .i m confused wat I have actulll, but in my blood report HLA B27 is positive, but I have have any pain in back, neck. I have only knee pain.