Peripheral neuropathies and aging.

Neuropathies are very common in the population over 65 years old and their prevalence increases with age. The prevalence of polyneuropathies is about 7% in the elderly. However, other possible neuropathies should not be overlooked. Diabetes mellitus is the first cause of neuropathy in the world. Beyond 80 years-old, the risk of finding no etiology is about 40% but it implies a minimum initial explorations. A vitamin deficiency, a dysimmune or even hereditary cause should be eliminated in the elderly subject, keeping in mind the characteristics of age. We propose a review of the different forms of neuropathies by emphasizing the clinical or electrophysiological particularities of the elderly.