A week of circumcision glans itchy scrotum at night, may be complicated by scrotal inflammation, ringworm, scabies, allergic factors. 1. Scrotal inflammation: If the glans penis is caused by bacterial infection, the bacteria may infect the scrotal skin of the infection caused by scrotal inflammation, which may cause scrotal itching at night. 2. Ringworm: If it is due to fungal infection caused by glans penis, the fungus may also infect the skin of the scrotum area causing ringworm, which may cause scrotum itching at night. 3. Scabies: Scabies mite infection, biting the scrotum skin may cause night scrotum itching symptoms. 4. Allergic factors: may be the use of drug allergies, or contact with the outside world of the sensitizer and other reasons, caused by local contact dermatitis, drug rash, can also cause glans penis a week night scrotum itching. The circumcision glans a week night scrotum itching, there may be other reasons, should go to the hospital in time to check, for treatment.