Allergic disorder is a disorder that is caused by an allergy or an allergic reaction. Allergic disorders include asthma, house dust mite allergy, food allergy, pet allergy, pollen allergies and insect sting allergies. An allergy is a hypersensitive reaction of the immune system to a substance (allergen) that has no effect on most people e.g. pollen, certain foods.
Allergic Disorders related Specialists in Allahabad