Help. About 4 months ago, I developed an itchy scalp (no flaking), eyebrows, eyelashes and soon itchy bumps all over my face. Now, it's slowly moved to chest, shoulders and back. I've noticed it's where I sweat. Also, it clears up as it moves around. In other words, my face and chest are much better, but shoulders and back are new. I work out 5 days a week. Two one hour sessions of cardio make me sweat in all of these affected areas.