Risk Factor For Allergy

Several factors increases the risk of Allergy

Allergy Risk factors:

There are several factors which increase the risk of allergy.  Allergy is an immunologically mediated reaction to substances which are considered harmless to most of us. This harmless substances are call Allergen.

Risk factors for Allergy:

1. Family history of Allergy– One parent atopic 50 % increase risk, both parent atopic more than 62 % risk increase in children. None are atopic chance is less than 20 % in children.
2. Serum IgE >100 IU/ml–  Increased serum IgE level may be a risk factor. But this is not consistent.
3. Tobacco Exposure–  Tobacco exposure in children can increase the risk of developing allergies. Stop cigarette smoking in home to prevent harmful effect on children.
4. Animal Contact– Animal dander, saliva, urine, hair, feather are the source of antigen. Cat antigen Fel d1 , Dog antigen Can f1 are important aeroallergen.
5. Dust Mite Exposure– House dust mite is a major allergen worldwide.They are microscopic. They feed human skin scales and debris. Important cause of perennial Asthma.
6. Eczema– Eczema or atopic Dermatitis is a part of the atopic march. Eczema is is associated with the development of food and environmental allergies.