The itchy body before going to bed at night may be due to neurodermatitis, urticaria and diabetes. 1. Neurodermatitis: the etiology and pathogenesis are still unclear, may be related to neuropsychiatric factors, dietary factors, local irritation and other factors, the patient usually appear paroxysmal intense itching of the skin, and itching symptoms are often aggravated at night. 2. Urticaria: mostly associated with eating animal protein, contact with animal fur and pathogenic microbial infections and other factors, the patient is often manifested as localized edematous masses, accompanied by itching, and may also be aggravated at night. 3. Diabetes: If the patient suffers from diabetes, due to sugar metabolism disorders, easy to lead to human skin neural regulation abnormalities, which may appear at night before going to bed itchy symptoms. Patients with symptoms of itching before going to bed at night, if you are not sure of the cause, it is recommended to go to the regular hospital in a timely manner, a clear diagnosis, and follow the doctor’s instructions to actively treat.