flares/symptoms off RA? If so, it may not be the sun, but rather the heat. Some people with RA really thrive in the heat, feeling it makes them feel better. Others find that being too warm makes them feel worse. that's why some people find heat packs really useful for RA symptoms, while others find ice packs more useful.   If you find that your symptoms get worse when you are out on sunny days that are not warm, you may want to talk to your doctor about it. There are a number of autoimmune diseases that are similar to RA and some of them, e.g., lupus, do experience a worsening of symptoms when you're in the sun. This does not mean that I think you have lupus, just that it's something you should definitely mention to your rheumatologist.   Good luck! Please keep us posted on what happens?