Dejerine Sottas syndrome

Dejerine Sottas syndrome
ICD-10	G60.0
ICD-9	356.0
OMIM	145900
DiseasesDB	5821
MeSH	D015417

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Dejerine-Sottas Syndrome/Neuropathy (hereditary motor and sensory polyneuropathy type III; sometimes also described as a subtype III of Charcot-Marie-Tooth disease) is an autosomal dominant or autosomal recessive neuropathy.

Symptoms

It is usually characterized by infantile onset of moderate to severe lower and upper extremity weakness and loss of sensation.

Symptoms are usually more severe and rapidly progressive than in the other more common Charcot-Marie-Tooth diseases, and some carriers may never walk and be wheelchair-bound by the end of their first decade, while others may need only a cane (walking stick) or similar support through life.

Symptoms range from very common (muscle weakness, reduced sensation in the extremities, pain in the extremities, clawed hands and deformed feet, ataxia, peripheral areflexia) to rare (hearing loss, nystagmus, anisocoria).

Diagnosis

On medical imaging, the nerves of the extremities (and cranial nerves in some cases) appear enlarged due to hypertrophy of the connective interstitial tissue, giving the nerves a distinct 'onion-bulb' appearance. Peripheral (and possibly cranial) nerve excitability and conduction speed are reduced.