“… 9 Patients with positive ASST had more severe urticaria, more prolonged duration, and more frequent attacks of urticaria and gastrointestinal symptoms than negative ASST patients. 39 On the other hand, there was no significant difference between ASST-positive and ASST-negative patients with CSU regarding total duration and frequency of disease. 40 A recent study in Korea reported that the predicted positivity of ASST decreased with increasing of serum total IgE level and disease duration with a bimodal distribution of two peaks for twenties and sixties.…”