An infant with chronic relapsing urticaria

Chronic urticaria in children can be related to viral infections, physical stimuli, autoimmune representation, autoinflammatory, or idiopathic. The cause of chronic urticaria, however, is rarely identified. We present a case of a 7-month-old girl with persistent urticaria that started at age 5 months, with poor response to H1 and H2 blockade, with a focus on identifying probable causes of her chronic urticaria. This case highlights the importance of an urticaria history and considerations for a broader evaluation given the clinical characteristics and patient's age.