Conduction velocity varies by fiber type. Unmyelinated, and therefore smallest, C-fibers have the slowest conduction velocity. Progressively more myelinated fibers have higher conduction velocities.

Types of Sensory Fibers

Fibers within a peripheral nerve are classified by conduction speed and diameter. Read more »

Diabetic Neuropathy

Up to 50% of patients with diabetes eventually develop diabetic neuropathy. Poor glycemic control and longer duration of diabetes are most important risk factors for development of neuropathy. The neuropathy can be... Read more »

Polymyalgia Rheumatica

Polymyalgia rheumatica (PMR) is considered a rheumatic disease even though its etiology is undetermined. It is a syndrome characterized by severe pain in the proximal muscle groups, i.e. the neck, shoulder girdle,... Read more »

Reflex Sympathetic Dystrophy

Reflex sympathetic dystrophy (RSD), complex regional pain syndrome (CRPS) is a syndrome of disproportionate amount of pain, abnormal function of the sympathetic nervous system, swelling, movement disorder, dystrophy and atrophy that follows an... Read more »