Quote Originally Posted by Crankin View Post
I get deep, red lines, irritation every place a waistband, bra, grippers etc touches me. It takes hours for it to go away. Even my socks cause a slight line. I just live with it. It's allergy related, gets worse when I'm under stress, or having a real allergy thing. It seems to get more "reactive" at times and I have no idea why. No allergist has ever figured it out. I can just brush my hand on my skin or normally scratch an itch and I will have marks for a day.
Dermatographia. I have this too.

http://www.mayoclinic.com/health/Dermatographia/DS00755

When I had several food allleric reactions last year, they were a combination of this and hives -- the hives broke out in places where there was pressure and irritation from elastic, wrinkled clothes and seams pressing against my skin, stuff like that.

But I have always had deep red marks from waistbands, elastic bands, edges of things pressing on my skin. When I wake up every morning I have red lines from wrinkles in my sheets and pajamas pressing on me.