Reputable websites such as Patient UK and Arthritis Research UK recommend that PMR sufferers take vitamin D. Also, research has indicated that vitamin D deficiency can exacerbate PMR symptoms.
However, the new PMRGCAuk website says the nightshade family (tomatoes, aubergines, peppers etc) "...contain solanine, which has a high concentration of vitamin D3. In excess, D3 may cause inflammation, muscle spasms, pain and stiffness."
So, I am confused. If anyone can clarify this apparent contradiction I would be grateful.