Abstract: 【Abstract】 Contact urticaria is a kind of chronic inducible urticaria, and can be classified into immunologic contact urticaria, non-immunological contact urticaria and contact urticaria of unknown pathogenesis according to pathophysiological mechanisms. The allergens responsible for contact urticaria are various, and there have been increasing reports on contact urticaria induced by related ingredients in cosmetics and by occupational exposure of healthcare workers in recent years. Detailed medical history and physical examination are the key to the diagnosis of contact urticaria, and a variety of skin tests can assist in the diagnosis. The main aim of treatment is to control symptoms, and avoiding contact with allergens is the key to preventing recurrence.

Key words: Urticaria, Allergens, Occupational diseases, Latex hypersensitivity, Contact urticaria, Treatment, Diagnosis