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Vasculitic Peripheral Neuropathy Yasushi Oya 1 1Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry Keyword: vasculitis , angiitis , vasculitic neuropathy , multiple mononeuropathy (mononeuritis multiplex) , nerve biopsy pp.1299-1309
Published Date 2013/11/1
DOI https://doi.org/10.11477/mf.1416101641
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Abstract

 The typical clinical manifestation of vasculitic peripheral neuropathy is sensory-dominant multiple mononeuropathy, although it can progress to distal-dominant sensorimotor polyneuropathy. It is painful in most cases. Peripheral nerves may be the most prone to produce symptoms of the vasculitis. Nerve conduction studies show reduced amplitude of M wave or sensory nerve action potential, which depends on the degree of injury of a nerve examined. Wallerian degeneration can cause pseudo-conduction block in the acute stage and temporal dispersion in the chronic stage. However, a definite diagnosis requires histological confirmation. Combined biopsy of the sural nerve and the peroneus brevis muscle can be performed by a single incision. Skin biopsy can also be performed. To increase the diagnostic yield, biopsy specimens are prepared in different manners to observe as many cross sections as possible: frozen unfixed, formalin-fixed paraffin-embedded, and glutaraldehyde-fixed epon embedded specimens, as well as teased fiber preparation of a nerve. Vasculitic peripheral neuropathy usually results from small-vessel vasculitis. There are still controversies regarding the classification of vasculitides. Differential diagnosis of vasculitis includes infection and lymphoma. Delayed diagnosis and treatment of neuropathy result in the impairment of ADL and QOL. Recovery from axonal degeneration usually takes time and is not always possible. Treatment includes corticosteroid, cyclophosphamide, and intravenous immunoglobulin administration; however, the intensity of treatment depends on the disease activity of vasculitis.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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