Having itchy bumps on my arms legs, back for nearly a year. Dermatologist biopsy indicated contact dermatitis, steroid creams don't work well. Recent blood test by allergist showed an elevated value indicating MCTD. From careful observation, I've noticed the itchy areas are from pressure or where clothing tends to rub my skin. Like the biceps where t shirts sleeves end, wrist where long sleeves end, outside calves, front of shins, shoulder blades, lower back, top back of legs from sitting. The more I scratch the worse the itchiness seems to get.