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Allergy is a condition that arises when the body's immunity starts reacting to common substances such as food, drugs and even dust, pollen, animal dander leading to reactions in the body. These substances are known as allergens and may be inhaled, swallowed or can come in body contact through skin.
What are the types of allergies?
Allergies are seen in form of watering of eyes (allergic conjunctivitis) running nose (allergic rhinitis), breathlessness and cough (asthma), skin rashes -wheals and urticaria (allergic dermatitis) and diarrhea (colitis).
Are allergies contagious?
Allergies are not contagious as they are due to aberration in the body's immune system. Hence they cannot be transmitted from one person to the other.
Are allergies hereditary?
Heredity can play some role in allergies. If one parent has an allergic disease, chance of a child developing allergies is 25% and if both parents have allergies, then chances of a child developing allergies is 50%. However, allergies may not be present at birth and can develop at any age.
Why do only few people develop allergies?
This is due to a unique immune system in every individual. When the body comes in contact with an allergen for the first time, the immune system considers it harmful and forms antibodies against it. When the body comes in repeat contact with the allergens, then more antibodies especially an antibody called as IgE is formed that leads to various reactions. IgE releases chemical called histamine that causes swelling, redness, inflammation in organs such as nose, eye, skin, lungs leading to symptoms.
Which are the common substances that lead to allergies?
Smoke, dust, pollen, chemicals, fungi, nuts, beans, potatoes, carrots, lobsters, crabs, shrimps, milk, plastic, drugs such as penicillin and insect bites can lead to allergies in an individual who is prone to allergies.
Why do some individuals get allergies in particular season?
Some patients have allergies throughout the year (perennial allergies) as seen with dust mites which may be present in carpets and mattresses or some may get symptoms only with particular season as seen with allergies to pollen.
Specialist Answers On Allergies in Children
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