allergic reactions
"I'm very allergic to certain pet dander, my eyes swell shut and itch. I also get an itchy rash on my forehead, neck, inner forearms and sides (probably I'm causing it to spread when I itch). When it gets bad I get a corticosteroid shot and prednisone. Within 24 hours all the inflammation has subsided. I would take it more often if it weren't so harmful for my body."