I also have bumps on my arms and legs that look like chill bumps since I was little (mine have been diagnosed as keratosis pilaris, which is from an over-production of keratin in
the hair follicles, leading to clogs, which is
the cause of
the bumps), abdominal pain (from IBS), and my skin also gets deep red and puts off heat (randomly, on my cheeks, ears, eyelids, nose, hands, and on an approximately 3"x3" patch of skin just above my elbows on the back of my arms, lasting anywhere