I recently got my hair done... I left the salon with a hydrating mask on my hair. When I came home I made dinner ate and watched a movie. I then took a shower and blowed dried my hair. I then staightened it with a flat iron... shortly after I had three red patches on my arm which felt like a might have burned it with the flat iron. When I woke up in the morning I had blisters. At this point I though it was a burn. I went and worked out for 2hrs. came home got in the shower and the blisters had grown. They hurt and oozed all night. now they are really red and hurts. No itching just burns. Random sores on my arms what could this be... its only in three spots and does not appear to be spreading???