An allergy is a hypersensitivity disorder of the immune system.

Allergic reactions occur when a person’s immune system reacts to normally harmless substances in the environment.

Symptoms such as red eyes, itchiness, and runny nose, eczema, hives, or an asthma attack. 


Some people can get allergic reactions from the presence animals.
 
Allergies can play a major role in conditions such as asthma. 

In some people, severe allergies to environmental or dietary allergens or to medication may result in life-threatening reactions called anaphylaxis.

Most of the genetic modified forests, foods, organisms and transgenic manipulated organisms are known for causing allergies.

Food allergies, and reactions to the venom of stinging insects such as wasps and bees are more often associated with these severe reactions. 

A substance that causes such a reaction is called an allergen. 


Due to the fact that spring time is a season when all living organisms like plants, trees, animals and humans bloom, this season also becomes a time when these organisms scatter pollen, orgasmic energies, animal dander, and dust mite debris in the environment, which can lead to allergic reactions.


Allergic reactions are distinctive because of excessive activation of certain white blood cells called mast cells and basophils by a type of antibody called Immunoglobulin E (IgE). 

This reaction results in an inflammatory response which can range from uncomfortable to dangerous.