Recently, hives sent me to an allergist; is this a topic for which you can give me some direction? Hi - As u probably already know, hives can have sundry causes and the allergist is only a little better than u trying to be a detective. Keep a diary of everything u ate drank, did and wore immediately preceding the hives for each each episode. Eliminate all food coloring, additives and the usual suspects such as all meds including over the counter, milk, fish, nuts, corn, eggs, etc.