Vascular Changes in Severe Carpal Tunnel Syndrome: A Differential Diagnosis of Vasculitis

a b s t r a c t Carpal tunnel syndrome may present with skin lesions. This may lead to a differential diagnosis with vasculitis. Sympathetic nervous system perivascular involvement and recurrent injuries secondary to sensory loss are probably part of the mechanism of injury. In this case, we also comment on the pathogenic role of persistent median artery associated with a bifid median nerve.