Fifteen-minute consultation: Assessing the child with persistent urticaria.

Chronic urticaria is the presence of wheals and/or angioedema, with daily or intermittent symptoms lasting more than 6 weeks. Although rarely life threatening, it can be a cause of significant embarrassment and misery. In most cases, no underlying factor is identified. It is therefore important to have a structured approach to the assessment in order to exclude important diagnoses, minimise costly screening tests and ensure a correct diagnosis is made. This article aims to highlight the importance of a focused history, provides a clear scheme for establishing a diagnosis and recommends when to perform appropriate investigations. A short discussion regarding treatment options and prognosis is also provided.