Sleeping in bed and feeling itchy everywhere on the body may be suffering from hives, eczema, scabies and other diseases. 1. Urticaria: If the patient is allergic to the ingredients in the bed sheets and bedding, urticaria may be induced, resulting in the patient feeling itchy everywhere in the bed. 2. Eczema: This disease is a kind of allergic skin disease, patients can be induced by contact with allergens, such as food, contact with objects and other items, resulting in patients feeling itchy all over the body when sleeping in bed. 3. Scabies: If the usual bed cleaning is not in place, or ever touched the scabies patient’s clothing, it may lead to scabies mites parasitized on the skin surface, resulting in scabies, so that the patient sleeps in bed and feels itchy everywhere on the body. There are many reasons that lead to itchy bed, it is recommended to the hospital for relevant examinations, a clear diagnosis, follow the doctor’s instructions for standardized treatment.