In the afternoon the body began to itch may be dry climate, contact dermatitis, urticaria and other factors. 1. dry climate: a body in the afternoon began to itch may be related to the climate, especially in the fall and winter seasons when the climate is dry, the body is prone to itching symptoms of dehydration, the morning coated with moisturizing cream to the afternoon to lose the protective effect of itching in the afternoon symptoms will be more pronounced. 2. Contact dermatitis: every afternoon time period in contact with some kind of allergy or irritant substances caused by body itching symptoms, need to identify the causative factors. 3. Urticaria: urticaria is the skin mucosa due to a temporary increase in vascular permeability, and a kind of limited edema, itchy skin after the disease, may be in the afternoon when there are triggered urticaria, causing urticaria onset. In the face of the abnormal symptoms of the body began to itch in the afternoon, you can go to the dermatology department of the regular hospital in time to investigate the cause.