Sleeping at night is particularly itchy, may be hives, itchy rash, pruritus, contact dermatitis, scabies and so on. 1. Urticaria: mainly due to increased osmotic pressure of the skin, capillary dilatation caused by skin tingling, and allergic reactions, may lead to sleep at night particularly itchy body. 2. Itchy rash: the cause is unknown, may be related to genetic factors, mental stress, food, drugs, infection, etc., may cause temporary itching of the skin, can also lead to sleep at night on the body especially itchy symptoms. 3. Pruritus: the etiology is complex, and mental factors, systemic diseases, living room environment, living habits, etc. are related, manifested as no primary skin damage, mainly characterized by itching, can also cause special itchy body sleep at night. 4. Scabies: Scabies mite infection, biting the skin, may also cause the symptoms of special itching at night. Itchy body at night, there may be other reasons, you should go to the hospital in time to check, clear cause, follow the doctor’s instructions for symptomatic treatment.