Q: Given her symptoms in the fall, I suspect my daughter has a ragweed allergy. How can we test for this?
Dr. Bassett: The quickest and most sensitive way an allergist tests for such an allergy is via the skin. A skin test involves a slight prick to expose the patient to a small amount of diluted ragweed pollen and other allergens. After 15 to 20 minutes, the allergist evaluates the size and redness of the resulting “wheal” or elevated bump.