Why am I breaking out in painful hives when I touch/eat anything?

[E]

You may need to deal with the diarrhea, try not to become dehydrated by drinking water and eating popsicles. You also may need to eat a bland diet such as toast (white bread), broths, peaches, scrambled eggs, boiled or baked potato (without butter or pepper), eliminate greasy spicy foods for a while. All your symptoms need to be evaluated by a doctor as there is also a possibility of either scarlet fever, tonsillitis, medicine reaction, food allergy, or something else, etc. Some food culprits could include wheat products (you may be able to tolerate enriched wheat instead of whole wheat), shell fish, oats, bran, rye, some pastas, some cereal, peanut products, glutton (Worcestershire and soy sauce and other products contain this), some spices, etc. Several things may need to be done including allergy testing, throat cultures, medicine change, seeing a dermatologist and your medical doctor. You may also need to change to a sensitive unscented soap like Dove, take short warm baths--not hot, and switch detergent also. Avoid wearing flannel, wool, and wool blends close to the skin. Neosporin is not effective against allergy, Trimencelone or Elidel are good as well as other products. With elimination of your rash triggers, using effective cream, effective antihistamine--try Tavist 1 (no decongestant), you should start getting some relief.