I have had a rash type condition on my neck and chest that resembles a sunburn off and on for the past 2 or 3 years. I had not worried about it because it was just dry, ruff, skin. But now it is scaly, red, blotchy, and ruff. It abrubtly stops where a tank-top would. I put aloe-vera on it the other day and immediately regretted it, with stinging and burning. Last time I went to the dermatologist they said it was dry skin. I did as told but it only got worse. I have no idea what it is. Please help!