Which of the following regions of the spinal cord is involved first in Friedreich's Ataxia:
Answer is A (Dorsal Root Ganglion): The first pathological changes in Friedreich's ataxia are thought to occur in the dorsal root ganglia with loss of large sensory neurons Ref: Clinical Neurology by Goetz.
Dorsal Root ganglion
Spinal tracts
Peripheral nerve
Cerebellum