Itching all over the body while sleeping at night may be caused by dry eczema, urticaria, scabies and other diseases, and should be promptly consulted to identify the cause. 1. Dry eczema: dry eczema occurs in the elderly, often in the fall and winter, and dry air, sebaceous glands of the skin secretion is insufficient, the use of irritating detergents to over-clean the skin, can be manifested as itchy skin discomfort, but also accompanied by dry cracks, flaking and fine lines. 2. Urticaria: patients with urticaria sleep at night if the thick quilt, the temperature of the whole body skin increases, thermal contact urticaria can occur, which will also lead to patients sleep at night itchy all over the body, and can be found on the patient’s skin in varying sizes of the wind. 3. Scabies: Scabies is a skin disease caused by scabies mites parasitized on the skin, often appearing at night itching, skin can also be found on the skin erythema, papules, papules and other skin damage. In addition to the above reasons, other diseases can also lead to itchy skin at night, please consult the doctor in time to find out the cause and treat the symptoms under the guidance of the doctor, so as not to delay the condition.