Charcot-Marie-Tooth Disease Clinical Characteristics and Management

Clinical Presentation

• Sensory deficits in a "glove and stocking" distribution are a common clinical manifestation of Charcot-Marie-Tooth disease, often presenting with a "stork leg" appearance due to peroneal muscle atrophy 1

Genetic Classification and Diagnosis

• The American Academy of Physical Medicine and Rehabilitation recommends that electrophysiological studies are essential for classification into demyelinating or axonal subtypes, and helps guide genetic testing 2
• Genetic testing provides definitive diagnosis with 100% specificity for established pathogenic mutations, and testing should follow a stepwise approach based on clinical presentation and electrophysiological findings 2

Differential Diagnosis

• Charcot-Marie-Tooth disease should be differentiated from acquired neuropathies, such as diabetic, toxic, or inflammatory neuropathies 3

Charcot-Marie-Tooth Disease Diagnosis and Management

Introduction to Charcot-Marie-Tooth Disease

• The American Academy of Physical Medicine and Rehabilitation recommends that Charcot-Marie-Tooth disease be strongly considered in patients presenting with ankle and foot pain and peroneal nerve weakness, as this presentation corresponds to the classic phenotype of this inherited peripheral neuropathy 4, 5

Diagnostic Considerations

• It is crucial to differentiate Charcot-Marie-Tooth disease from acquired neuropathies, such as diabetic, toxic, or inflammatory neuropathies, as incorrect diagnosis can lead to inappropriate management, according to Pediatrics 4, 5
• A diagnostic pitfall is that calf muscle atrophy with "saber shins" can be misdiagnosed as Charcot-Marie-Tooth disease when it is actually a tethered cord syndrome, as mentioned in the literature 4, 5