How does an allergy doctor determine what kind of one has?

An allergologist, or allergy doctor, uses a variety of methods to determine what kind of allergy a person has. These methods may include:

* Medical history: The allergologist will ask about the person's symptoms, when they occur, and what triggers them. This information can help the allergologist narrow down the possible causes of the allergy.

* Physical exam: The allergologist will perform a physical exam to look for signs of an allergic reaction, such as swelling, redness, or itching.

* Skin prick test: A skin prick test is a common way to test for allergies. The allergologist will place a small amount of allergen on the person's skin and then prick the skin with a needle. If the person is allergic to the allergen, a small bump will form at the site of the prick.

* Blood test: A blood test can also be used to test for allergies. The blood test will measure the levels of antibodies in the person's blood that are specific to certain allergens.

* Challenge test: A challenge test is sometimes used to confirm an allergy diagnosis. The challenge test involves giving the person a small amount of the allergen by mouth or injection. If the person has an allergic reaction, the challenge test will confirm the diagnosis.

Once the allergologist has determined what kind of allergy the person has, they will develop a treatment plan. The treatment plan may include avoiding the allergen, taking medication, or getting allergy shots.