Is it possible to get really red after dairy from a dairy allergy? Where?

Anywhere . Part of a typical allergic reaction to foods is redness and itching of skin. It can occur anywhere and is often generalized and progresses to hives. It is unusual for the reaction to occur more than 2 hr. After eating the food and it is unusual to have only skin symptoms without mouth (itching, swelling) and GI (nausea, vomiting, cramps, diarrhea) symptoms. Reactions occur after 1 sip, each time.