Itching all over the body at night, and the more you scratch, the more itchy you get, considering that it is caused by urticaria, eczema, scabies and other diseases. 1. Urticaria: The cause of urticaria is more difficult to determine, and is considered to be related to changes in the living environment, food, drugs, infections and other factors. Some people may be induced by contact with corresponding allergens at night, which triggers urticaria and leads to generalized itching. 2. Eczema: Eczema may be caused by a variety of internal and external factors, infections, endocrine changes, food, environmental changes, etc. may be the cause of eczema, the concentration of attention at night, the itch is more pronounced, which may lead to scratching the more itchy. 3. Scabies: Scabies is caused by scabies infection, scabies like darkness and fear of light, the warmth of the room at night, scabies in the bedding increased activity. Scabies worms mate on the skin, lay eggs in tunnels, and secrete toxins, causing irritation to the skin and leading to increased itching at night. To summarize, night itching is related to a variety of factors, it is recommended not to blindly use medication, you can go to the hospital dermatology department for examination, to clarify the cause, for the causative factors, symptomatic treatment.