I have Rheumatoid Arthritis and besides the knots in my joints, I'm finding them under my skin on my arms abdomen and upper legs. I keep forgetting to ask my Dr. about it, He would probably send me to another Dr. I hate that.So, I'm asking does anyone else have this problem, or what it may be.? They are small, about the size of a large gun pellet , and HURTS, Luckily, I don't have many.