Allergic reaction occurs when our body's immune system reacts to otherwise harmless foreign particle . The immune system recognize that invaders by their antigens, which are protein on the surface of invading cells.
Allergy is a condition in which immune system reacts abnormally to any foreign particles or substances.They may takes few days to disappear. It can caused b y pollen season, medications, or any specific substances that causes allergic reaction is called allergen.
Having an allergy increase the risk of certain type of medical problems such as- anaphylaxis, asthma,sinusitis, etc. Its prevention is depends on the type of allergic reaction such as avoid known triggers,keep a diary, wear a medical alert bracelet.
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