Allergy is an abnormal reaction by a human immune system against allergens -substances which provoke hypersensitivity of a person to harmless substances such as dust, different flower powders (pollen) or medications. Allergic reactions are characterized by rapidness, predictability and possibility to obtain them at any time of your life.
When a person who suffers from allergy meets the allergen his body starts releasing chemicals which cause allergy symptoms. White blood cells or mast cells release histamine in response to allergen. This substance produces sneezing, itching, hives and watery eyes.
Most common allergic reactions are:
- Hay fever;
- Reactions to stinging of insects.
Mild or moderate allergic reactions can be easily treated nowadays with the help of a great number of medications. However, it is necessary to consult your doctor before starting any treatment to undergo special procedures to diagnose allergic conditions such as skin testing for responses to known allergens or analyzing the blood for the presence and levels of allergen-specific IgE.
A variety of treatment options are available now, but you should first of all avoid allergens to prevent allergic reactions. In case it is impossible, use of antihistamine therapies, immunotherapy can help.