Friday, January 22, 2010

The word 'allergy' means an altered or abnormal tissue reaction after exposure to an antigen (also called an 'allergen'). The allergic reaction occurs if the body tissues are sensitive to the allergen. The allergen may reach the tissues by direct contact with the skin or various mucous membranes of the organs or through the bloodstream after absorption. Almost any part of the body can be affected by allergies. Allergic reactions are caused by a wide range of substances and conditions. These include pollens, dust, cosmetics, and animal hair; poisonous plants, serums, vaccines, and drugs; physical agents such as heat, cold and sunlight, as well as a variety of foods. The foods that commonly cause allergic reactions are oranges, milk, eggs, wheat, fish and other sea foods, chocolates, tomatoes, and strawberries.

Symptoms of Allergies

Recurring headaches, hay fever, Vomiting etc

Allergic symptoms are manifested in various forms in different organs. These include recurring headaches, migraines, dizziness, irritability, nervousness, depression, neuralgia, conjunctivitis, eczema, hay fever, a stuffy or runny nose, diarrhoea, vomiting, urticaria, asthma, shortness of breath, and swelling of the face and eyes. The same substance can cause different symptoms in different people at different times.

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