Hereditary sensorimotor neuropathy with hyperelastic skin

Definition

A rare, genetic, demyelinating hereditary motor and sensory neuropathy disorder characterized by slowly progressive, mild to moderate, distal muscle weakness and atrophy of the upper and lower limbs and variable distal sensory impairment, associated with variable hyperextensible skin and age-related macular degeneration. Hypermobility of distal joints, high palate, and minor skeletal abnormalities (e.g. pectus excavatum, dolichocephaly) may also be associated.