Chronic urticaria: a model questionnaire for patient screening.

Evaluating patients with chronic urticaria is frequently a time-consuming, costly, and frustrating undertaking. Taking a thorough, detailed history should always be the first step in the diagnostic process as associations that may not be apparent to the patient are important to the physician. We developed a questionnaire to be used as an initial historical database in evaluating chronic urticaria and to help efficiently establish the diagnosis of underlying causes.