hello welcome to healthcaremagic, your nephew has had spinal cord injury
so he has double incontinence
that is he is not able to appreciate the sensation but if he is able to walk then the autonomic nerve system is affected. we should treat him conservatively with injections and tablets to improve his spinal nerves and intermittent catheterisation can be tried. so he has to meet a neurologist
so that nerve conduction study
can be done and the severity of nerve damage can be assessed and treated accordingly.