Hi Tonya
Welcome. I am new myself here too. I am sorry to read that you are suffering with your knees, I hope your doctors can assist you with this.
Regards the sun, I am currently going through what I now know to be a lupus flare, having had the most horrendous week. After speaking with both my GP and Rheumatology registrar, I went out in the sun last week, I did have a hat on plus shades, but in shorts and no sunscreen? I have since very strongly been advised to use total sun block and to as much as is possible avoid full sun.
They really pushed the point home, so yes I would say it is important, and all my readings so far, also give good warnings on Lupus and sun.
Hope you feel better soon.