Very interesting...i asked a dermatologist and my Neuro. Nope, not RSD. That happenes to me when out in the sun, not in the sun. Knock on wood not for many months. I still have marks on my arms from these bumps filled with a watery substance and bleeds. I had some on my shins and one got so infected it turn into mersa. If i knew how to download a photo on here I'd attach it.