Chronic Spontaneous Urticaria Patient Developing Idiopathic Anaphylaxis and Responding to Omalizumab Treatment: Case Report

Anaphylaxis in which no triggering cause can be demonstrated is called idiopathic anaphylaxis (IA). Idiopathic anaphylaxis is a lifethreatening disease with symptoms similar to other forms of anaphylaxis. Although rare, it is clinically important due to the risk of morbidity and mortality. There is currently no standard long-term prophylaxis regimen for IA. The use of omalizumab was beneficial in some patients who did not respond to treatment.