Classification

1. Neuronal Degenerations.
   • Primary Degenerations:
     • Global – Alzheimer, Lewy body, Fronto-temporal (dementia)
     • Selective/System – Parkinsons, Huntingtons, MND
   • Secondary Degenerations:
     • Toxic, metabolic (genetic), infections(CJD), Vascular (CVA)
     • Alcohol, drugs, Vit B12 def.
2. Myelin Degenerations:
   • Demyelinating Disorders - Multiple sclerosis, Vit B12 def.
   • Dysmylinating disorders - Leukodystrophies.

• Primary

• Secondary

Myelin disorders