Question: what are the nervous system diseases?
Answer: Alzheimer's disease. Alzheimer's disease affects brain function, memory and behaviour. ... 
Bell's palsy. Bell's palsy is a sudden weakness or paralysis of facial muscles on one side of the face. ... 
Cerebral palsy. ... 
Epilepsy. ... 
Motor neurone disease (MND) ... 
Multiple sclerosis (MS) ... 
Neurofibromatosis. ... 
Parkinson's disease.