Clinical Characterization of Patients with Chronic Spontaneous Urticaria according to Anti-TPO IgE Levels

Figure 3

Prevalence of self-reporting, sensitization, and positive challenge test to foods. Food challenge tests were performed using the suspected food in patients who self-reported food allergy (). Each patient was challenged with the food or foods that he/she suspected of exacerbating urticaria ( 169). Patients with (+) anti-TPO in dark green and (-) anti-TPO IgE in light green. .