I feel pain in my arms and knees since last many years. Knees pain is slow but consistent. But arms pain is very severe and comes spontaneously. I went through a series of x-rays & blood tests and doctors found nothing to worry. My exposure to sun is very limited to no exposure. I do realize that not taking sunlight is the main issue because deficiency of Vitamin D is my problem since last many years. I used injections and tablets for Vitamin D, but all is temporary relief. Please suggest.