How do you get hives?

Urticaria is a common allergic skin disease. The etiology of urticaria is very complex. Most patients cannot find the exact cause of the disease, especially chronic urticaria. The main causes of urticaria are food and food additives, inhalation of certain specific substances, and infectious factors, especially viral infections and parasitic infections. In addition, some drugs may cause allergic reactions and trigger urticaria. Then there are physical factors, such as mechanical stimulation, that is, hot and cold stimulation. In addition, mosquito bites, there are mental factors, endocrine changes. In addition, genetic factors may also cause urticaria. If urticaria is shown, it is recommended to go to the dermatology clinic in time. The doctor asks about the medical history, improves the relevant examination, and clarifies the cause before targeted treatment.