Both types of neurons are affected.
The sensitized neuron is affected since we find numbness.
Numbness refers to a complete or partial loss of sensation. It can be a symptom of dysfunction of the nervous system.
Numbness occurs when part of the sensation lane is malfunctioning, usually because of a disorder or medication.
The motor neuron is affected because there is a loss of control of the legs.
The diagnostic orientation, faced with a motor or sensory deficit of one or more members, goes through two distinct stages: The syndromic and topographical diagnosis. The anamnesis should be initially undirected and let the patient express himself, then the semi-directive interrogation will seek to remove any ambiguity in the use of the terms used by the patient to describe his disorder.
It is common for a walking disorder, regardless of its origin (cerebellar ataxia, parkinsonian walk, etc.), is reported by the patient to "weakness" of the lower limbs. A "malfunction" of the hand can correspond, according to the patients, to a motor deficit, a proprioceptive attack or a cerebellar attack.