To diagnose allergies, a physician (also known as an allergist) obtains a history from the patient and performs a physical examination. This history includes past medical conditions, family health, current and prior allergic symptoms, and details about the home, work and/or school environment.
Allergy skin testing may also be performed to determine the cause of allergic symptoms. This is a simple procedure which involves placing a small amount of various allergens on the skin and then lightly pricking the surface. In some cases, blood tests may be used. Patients with asthma or other breathing difficulties may also have a simple test to assess their ability to move air into and out of their lungs. All testing is tailored to the specific needs of the patient.