Itchy skin at night may be caused by scabies, eczema and urticaria. 1. Scabies: is a contagious skin disease caused by the scabies mite parasites in the skin, the patient’s skin is often accompanied by intense itching, and its aggravation at night. 2. Eczema: a chronic inflammatory itchy skin disease, and the rash is polymorphic, symmetrical distribution, can also appear at night sleep itchy skin phenomenon. 3. Urticaria: a kind of limited elevated in the skin, mucous membrane surface edema mass, mostly with itching, and then appeared in different sizes of red or pale white wind, but also in the night time when the phenomenon of itchy skin. If the above symptoms occur, it is recommended to consult a doctor in time to identify the cause of the disease and actively cooperate with the doctor’s treatment.