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Definition

An axonal form of Charcot-Marie-Tooth disease, a disorder of the peripheral nervous system, characterized by progressive weakness and atrophy, initially of the peroneal muscles and later of the distal muscles of the arms. Charcot-Marie-Tooth disease is classified in two main groups on the basis of electrophysiologic properties and histopathology: primary peripheral demyelinating neuropathies (designated CMT1 when they are dominantly inherited) and primary peripheral axonal neuropathies (CMT2). Neuropathies of the CMT2 group are characterized by signs of axonal degeneration in the absence of obvious myelin alterations, normal or slightly reduced nerve conduction velocities, and progressive distal muscle weakness and atrophy. Nerve conduction velocities are normal or slightly reduced.

Acronym

CMT2A2A

Synonyms

Charcot-Marie-Tooth disease axonal type 2A2
Charcot-Marie-Tooth disease neuronal type 2A2
Charcot-Marie-Tooth neuropathy type 2A2
CMT2A2
Hereditary motor and sensory neuropathy IIA2
HMSN2A2
HMSN IIA2

Keywords

Charcot-Marie-Tooth disease
Neurodegeneration