I've had one on the back of my neck, right in the middle of my stomach, but more often than not, they appear on the outside of my arms, though never on my hands, never on
the inside of my arms, never on
, face, or back. Just the front of my upper torso and arms.. I didn't think dry skin showed up in such a specific way, and I thought it would be associated with a rash, which I never get. They appear and then disappear, typically in a week to a week in a half.