The causes of itchy body at night include contact dermatitis, scabies, mosquito bites, hives, etc. The treatment drugs include insecticides, anti-inflammatory drugs, anti-allergy drugs and so on. 1. Contact dermatitis: due to sleeping in contact with certain irritating, allergic substances, such as contact with the new quilt, chemical fiber items, shower gel, etc., need to find out the causative factors, and timely avoid re-exposure, at this time can be given to the fluoride relaxation and other drugs anti-inflammatory treatment, oral antihistamine drugs such as chlortetracycline in the severe cases. 2. Scabies: If the skin is infected by scabies mites, these bugs can cause skin itching after damaging the skin at night, at this time, you can give the application of sulfur cream and other insecticidal treatment, severe itching can also take drugs such as loratadine. 3. Mosquito bites: If the skin is bitten by mosquitoes while sleeping, itchy pimples appear, at this time you can give the application of compound Benadryl cream to stop itching treatment. 4. Urticaria: when the skin allergic reaction may appear after red spots, wind masses with itching, at this time you can give imipramine, avastin and other drugs anti-allergy treatment. Finally, the phenomenon of sleeping at night body itchy phenomenon, please go to the hospital in time to check, the above drugs please follow the doctor’s instructions.