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To assess if diabetic dermopathy (DD) is a sign for severe polyneuropathy (PNP).

We investigated the clinical and electrophysiological characteristics of 166 diabetic men (59.5+11.1 years) with different degrees of peripheral nerve involvement.

All of the clinical variables were more common in patients with diabetic foot ulcers (DF) than in patients with sole PNP (P<0.001). Only the loss of superficial and vibration sense was more common in the DF patients than the DD patients (P<0.02). Nerve conduction studies showed the mean compound muscle action potentials (CMAP) were smaller in the DD and DF patients than the PNP patients for peroneal, median and ulnar nerves (P<0.01). The mean nerve conduction velocities (NCV) of all nerves were slower in the DD and DF patients in compared to sole PNP patients (P<0.01). The mean distal latencies (DL) of the DD/DF patients …