Rarely a patient complains of numbness in an extremity associated with exercise. Typically there is an underlying neurological disorder.

Numbness in an upper extremity:

(1) Chiari malformation type I

(2) nerve compression


Numbness in a lower extremity:

(1) epidural venous plexus congestion (venous congestion myelopathy) secondary to a disorder of the lower inferior vena cava (absence, thrombosis, obstruction, other)

(2) myelopathy from other cause

(3) nerve compression


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