期刊
MUSCLE & NERVE
卷 53, 期 6, 页码 856-861出版社
WILEY
DOI: 10.1002/mus.24969
关键词
CIDP; diabetes; idiopathic; MGUS; neuropathy; prediabetes
Introduction: The etiology of neuropathy was idiopathic in 20%-30% of patients despite thorough investigation, based on results from the 1980s and 1990s. Since then, new etiologies have been recognized, and skin biopsy has been used to confirm small-fiber neuropathy. Methods: The authors reviewed the charts of 373 patients with idiopathic neuropathy who were referred to a neuropathy center between 2002 and 2012. Results: Among the 284 eligible patients, 93 (32.7%) remained idiopathic. The most common cause was impaired glucose metabolism (72 patients, 25.3%), including diabetes in 26 and prediabetes in 46. Other etiologies were chronic inflammatory demyelinating polyneuropathy (CIDP) in 57 (20%) and monoclonal gammopathy in 20 (7%), as well as toxic, Sjogren disease, celiac disease, other immune-mediated diseases, vitamin B-12 deficiency, amyloidosis, vitamin B-1 and B-6 deficiency, vasculitis, hypothyroidism, hereditary, Lyme disease, and antisulfatide antibody. Conclusions: The major causes of undiagnosed neuropathies were impaired glucose metabolism, CIDP, and monoclonal gammopathies. Despite thorough evaluation 32.7% remained idiopathic.
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