Various factors can dictate the occurrence of Neurodegeneration: Genetic, Epigenetic, Environmental, Habits, etc.

Still unclear the actual or the exact factor leading the neuronal degeneration. Extensive research is still required to understand the mechanism.

None of the diseases have a distinct cure, just medicine to suppress the symptoms.

Life expectance after diagnosis: <4 years (late diagnosis); ~10 years (early diagnosis) depending upon the disease type.

6. Huntington’s Disease (HD)
7. Spinal Muscular Atrophy (SMA)
8. Spinocerebellar Ataxia
..more
www.sciencedirect.com/topics/neuro...