How Can Nocturnal Enuresis With Inner Thigh Sores Be Treated?

My son will be ten years old this year and he still wets the bed every night even though we limit liquids, go to the bathroom before bed and I wake him everynight to go again, he still wets, sometimes twice a night. He has sores on his inner thighs because when he wets it doesn t wake him. We don t use pull-ups anymore, bed is protected instead, please help!!!