Dear student.
There are many disorders associated with the excretory and nervous system, few of them are mentioned below.
Disorders of the excretory system: Kidney stone, urinary tract infection (UTI), bladder cancer, glomerulonephritis, gout, Urethritis etc.
Disorders of the nervous system: Epilepsy, Huntington’s Disease, Amnesia, stroke, hemorrhage, meningitis, encephalitis, polio, neuro-degradatory disease such as Parkinson, Alzheimer etc
Regards.