Suggest Remedy For Natural Erection Of 10 Hours After C3 Injury

If someone has a NATURAL erection for 6 - 10 hours daily. What is done? They have a C-3 injury. They need a caregiver. He can t move his arms. Does he literally need to be masturbated? What would a doctor do? Can he have is urinary process re routed so he wont get erections, he doesnt have sex anyways obviously.