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If you have an allergic disease, your body identifies some substances, called allergens, as harmful. These substances, which are harmless to most people, trigger allergic reactions within your immune ...

When you are allergic, your body is reacting to a particular substance that should not normally bother you. These substances are called allergens. Typical allergens include pollens, dust mites, animal...

In addition to assessing your detailed history about a prior allergic reaction to penicillin, allergists administer skin tests to determine if you are allergic to the medication. These tests, which a...

Medication allergies can be difficult to diagnose. Some allergic reactions to drugs — particularly rashes, hives and asthma — can resemble certain diseases. An allergy to penicillin-type d...

In an oral food challenge, small increment amounts of food are fed to the patient over a period of a few hours to determine if a reaction occurs. Due to the possibility of a severe reaction, it must b...

Allergy immunotherapy is the medical term for allergy shots, which are an effective treatment to help you become less allergic. The types of immunotherapy are: Conventional — Allergy shots ...

Allergy When you cannot avoid allergens, there are many medications that can help control allergy symptoms. Decongestants and antihistamines are the most common allergy medications. They help to reduc...

Asthma is a common lung disorder characterized by episodes of coughing, wheezing and shortness of breath. Asthma is caused by inflammation of the lining of the small airways in the lungs (bronchioles)...

Allergy shots (also called subcutaneous immunotherapy or SCIT) are one of the best treatments available for your allergies and asthma. It is one of the few disease-modifying therapies available in med...

Severe stinging insect allergy affects over 9.5 million Americans including 3% of adults and up to 1% of children. There are 40 to 100 deaths in the U.S. each year, and that number has not changed in ...