These disorders include any dysfunctions, diseases, disorders, and maladaptive changes in the nervous system. These disorders are also referred to as neurodegenerative disorders.
They are caused by the death of neurons leading to the dysfunction of a particular part of the whole nervous system.
They may be caused due to a variety of reasons spanning from genetics to mutations, to sporadic, to being trauma or injury-related.
The symptoms of neurodegenerative disorders are related to the location of neuronal death.
For example, Spinocerebellar ataxia is a nervous system disorder that leads to neural death in the cerebellum of the brain.