Chronic urticaria should be referred to the Department of Dermatology, and if there is a combination of other diseases, it can be seen in the appropriate department. Urticaria is one of the most common diseases in dermatology, which refers to the temporary dilation of small blood vessels in the mucous membranes and the skin, as well as the increase in permeability, resulting in a limited edema reaction. Urticaria that lasts more than six weeks is called chronic urticaria. The main manifestation of an attack is a windswept mass, which appears red or pale in color. The causes of the disease are complex, food, drugs, infections, other diseases such as thyroid disease can trigger chronic urticaria, if the combination of other diseases, you need to register in the appropriate departments such as endocrinology. If there are related symptoms, timely diagnosis and treatment should be carried out to prevent delays.