Definition of Allergies
An allergy is an exaggerated or reaction to substances that are generally not harmful.
Causes, incidence, and risk factors
Allergies are relatively common. Both genetics and environmental factors play a role.
Symptoms
Allergy symptoms vary, but may include:
Signs and tests
The health care provider will perform a physical exam and ask questions such as when the allergy occurs.
Treatment
Severe allergic reactions (anaphylaxis) require treatment with a medicine called epinephrine, which can be life saving when immediately given.
Expectations (prognosis)
Most allergies can be easily treated with medication.
Review
Paula J. Busse, MD, Assistant Professor of Medicine, Division of Clinical Immunology, Mount Sinai School of Medicine, New York, NY. Review provided by VeriMed Healthcare Network. David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. – 6/29/2010
