I have pain in joint specially knee joint and also pain in back and shoulder. I am having the pain from 20 days. There is no swelling in joints. But this is not new. I had the pain before also. Vitamin D test was conducted and found that it was very low. I was given vitamin D medications and relieved from pain. I took cholecalciferol 60000IU. I also get relieved from pain when I do morning walk. This pain is repeated in a few months to a year. every time why there is vitamin D deficiency. I eat only vegetarian food.