Food intolerance, or masked food allergy, is still a relatively new concept in medicine. People suffering from it may display symptoms like fatigue, which may be caused by the very food that they carve.

In general, an allergy is a physical disorder caused by hypersensitivity to certain usually harmless substances that are eaten, inhaled, injected or brought into contact with the skin.

Symptoms ::
Headaches. Sneezing. Running nose. Teary eyes. Wheezing and coughing. Spots, hives or welts.

Treatment ::
Avoid contact with the allergen. Drugs such as antihistamines and decongestants, as well as local ointments may be prescribed. Sometimes, the patient is repeatedly injected at intervals with small but escalating amounts of the antigen to build up his tolerance.

Prevention ::
Avoid processed foods with additives and artificial coloring and flavoring. Take vitamin supplements, especially vitamin C, and exercise regularly. Consult your doctor and take your allergy medicines as prescribed.