Allergic rhinitis is prevalent and expensive in terms of quality of li
fe and time away from work or school.(9) The first step in diagnosing
allergy is recognizing the signs and symptoms through careful history
taking and physical examination. Symptom patterns often provide import
ant clues. Allergy testing can identify specific allergens and direct
environmental controls but is not necessary as a first step if clinica
l suspicion of specific allergens is high. The cost of therapy can be
relatively low if accurate diagnosis pinpoints an allergen that can be
readily controlled or eliminated.