Here is a site which will have a list of foods to avoid as they have potential degranualtors , which means they can cause a potentially dangerous release of histimine www.mastokids.org
I have also copied this down and for more information we have a Dermatology forum on MH Triggers for Mast Cell Disease
Physical stimuli: Exercise, heat, skin friction, hot baths, hot drinks, cold exposure (especially swimming), sunlight, emotional stress, spicy foods.
Medicines, oral and injected: Aspirin, alcohol (in cough compounds and pediatric elixers), morphine, codeine, dextromethorphan (“DM” in cough compounds), nonsteroidal anti-inflammatory agents, procaine, opiates (codeine, Demerol, morphine), thiamine, high molecular weight polymers (dextran).
Medicines, topical: Topical antibiotics containing polymyxin B.
Medicines sometimes used with general anesthesia: D-tubocurarine, scopolamine, decamethonium, resperpine.
X-Ray Contrasts and Agents: Radiographic dyes, gallamine.
Venoms: Snakebites, bee stings, jellyfish stings.
Histamine Containing Foods: Parmesan, Blue, and Roquefort cheeses, spinach, eggplant, some red wine, tuna, mackeral, bonita, skipjack.
Histamine Releasing Foods: Ethanol, egg white, crustaceans (crayfish, lobsters), chocolate, strawberries, tomatoes, citrus.