An allergy is the manner in which the immune system of the body will react to the presence of a certain material or substance, which is not usually harmful to other people. The material or substance, which triggers the allergic reaction, is known as an allergen. The human body has the capacity to recognize the allergen and it will release the required chemicals, which will cause many different kinds of allergic reactions like coughing or sneezing. But sometimes an allergy can prove to be extremely fatal and the person could die.
There are many different kinds of allergies. Some of them are:
• Food allergy
• Skin allergy
• Indoor allergy
• Outdoor allergy
• Chemical allergy
• Common allergy
• Canine allergy
• Seasonal
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- Source : http://www.wellnessstarts.com
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