Brown and red patches ,painful rashes under my eyes. stomach pain and i puked. not feeling like to eat anythng from past 2 days. what is it?

Allergicresponse ? : From the reaction, it sounds like you are something you are allergic to, and may have broken a rash in that time period. If the rash is still a problem take 1-2 tablets if Benadryl (diphenhydramine) every 4-6 hrs until you feel better and the rash is fading. Go see your doctor to find out if that is enough treatment and to confirm what is there