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What are the common symptoms of histamine-intolerance?

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Quick Answer

The most common symptoms of histamine intolerance include flushing, diarrhea, migraines, hives and eczema, according to About.com. More serious symptoms include anaphylactic shock, asthma attacks and exacerbation of conditions such as Crohn's disease.

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Full Answer

The best way to treat histamine intolerance is to stick to a diet of histamine-free foods, explains About.com. People with this condition should avoid any food that has gone through an aging process, such as red wine or cheese. Certain vegetables also have high levels of histamine, including tomatoes and spinach. There are also medications that can impact histamine intolerance, so those on medication should talk to a doctor about altering the dose or changing to a similar medication.

People with histamine intolerance may also find relief by taking an antihistamine, such as Benadryl, if accidentally eating a histamine-containing food, states About.com. Some doctors recommend supplements, such as high doses of vitamin B-6 or vitamin C; however, patients taking these supplements must still avoid eating foods with high levels of histamine.

Histamine intolerance is difficult to diagnose because it may seem similar to other food allergies, but in this case, the histamine often builds up over time, advises About.com. Doctors may suggest keeping a food diary and undergoing a trial of eating different foods to determine which foods trigger a reaction.

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