Hi, I'm a 22 year old female, weighing in at 220 pounds with no medical history. I suffer from acne, but as of lately I've been getting random, tiny itchy (small then a dime) clusters of clear, braille sized bumps on the back of my hand, right under my index knuckle, and two right above my elbows on both arms. My mother think's it's "pricky" heat, but I've never had this before. This is the 3rd time that it's happened as it heals up, scabs, and falls off, but then happens again, in the same place on my hand, but now other places on my lower arms. Should I be concerned? What would you say this is?