My 8 month old son has a rash that he has had for 7 months. It goes away with steroids but comes right back after he's done. We've been to a pediatric dermatologist and an allergist and we can't seem to get answers. As parents, we're at the end of our rope. Ring worm and the herpes virus has been ruled out. They say he has hives but it has lasted months. Any help would be appreciated. I'd post pictures but not sure if I can on here.