The Reasons and causes of having various Allergic Reactions
The Reasons and causes of having various Allergic Reactions
Allergies are familiar to everyone and affect about
one in three at some time in their lives. There are many different sources of
allergy, and symptoms range from very mild to potentially life-threatening. Allergy is one of the major factors
associated with the cause of and persistence of asthma. An allergy develops
when a person’s immune system over-reacts to objects — called an allergen — in
the environment. These allergens are found in house dust mites, foods, drugs,
insect stings, pets, pollen, latex, and molds. An allergen for one person may
not be a dilemma for another person, and everyone reacts differently.
What Causes an Allergic Reaction?
Almost anything can trigger an allergic reaction.
• The body's immune system involves the white blood
cells, which produce antibodies.
• This antibody type promotes the production and
release of chemicals and hormones called "mediators."
• Allergic reactions are unique for each person.
Reaction time to allergens can vary widely.
• Seasonal allergic rhinitis (also called hay fever)
is an allergy that occurs in the spring, summer, or early fall caused by
allergies to pollens from trees, grasses or weeds, or to mold spores.
• Allergies, and the tendency to have allergic
reactions are hereditary -- that is, it runs in some families.
• Risk factors include certain medical conditions that
can make a person more likely to have allergic reactions:
Severe allergic reaction in the past
Asthma
Lung conditions that affect breathing, such as chronic
obstructive pulmonary disease (COPD)
Nasal polyps
Frequent infections of the nasal sinuses, ears, or
respiratory tract
Sensitive skin, especially sufferers of eczema
Various allergy and reactions are caused by any
disorder in our immune system and a Human Body.
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