Neuralgic Amyotrophy Kazuhiro Fukushima 1 , Shuichi Ikeda 2 1Intractable Disease Care Center, Shinshu University Hospital, Shinshu University School of Medicine 2Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medeicine Keyword: 神経痛性筋萎縮症 , パーソネージ・ターナー症候群 , 特発性腕神経叢炎 , 腕神経叢 , neuralgic amyotrophy , Parsonage-Turner syndrome , idiopathic brachial neuritis , brachial plexus pp.1421-1428
Published Date 2014/12/1
DOI https://doi.org/10.11477/mf.1416200056
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Neuralgic amyotrophy (NA) is a distinct peripheral nervous system (PNS) disorder characterized by sudden attacks of neuropathic pain, usually in a unilateral upper extremity, and patchy paresis with atrophy in the glenohumeral muscles. The lesion sites of NA are commonly considered to be upper brachial plexus (BP) and/or individual branches of the BP. The cause of NA remains unknown. Some evidence suggests a complex pathogenesis in NA that includes predisposition and susceptible PNS structures, and it can be triggered by infection, trauma, and strenuous exercise. NA is considered to be broad and encompasses a spectrum of atypical presentations, including involvement of the lower part of the BP, isolated nerves (anterior interosseous nerve or posterior interosseous nerve), or lumbosacral plexuses. Functional prognosis of NA is less favorable than previously assumed; however, specific therapy for patients with NA remains to be established.

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