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Review
. 2022 Feb;41(2):567-572.
doi: 10.1007/s10067-021-05971-6. Epub 2021 Nov 2.

Hypertrophic pachymeningitis in polyarteritis nodosa: a case-based review

Shun Nomura  1 , Yasuhiro Shimojima  2 , Yasufumi Kondo  1 , Dai Kishida  1 , Yoshiki Sekijima  1
Affiliations
Review

Hypertrophic pachymeningitis in polyarteritis nodosa: a case-based review

Shun Nomura et al. Clin Rheumatol. 2022 Feb.

Abstract

Hypertrophic pachymeningitis (HP) is a rare neurological disorder with focal or diffuse thickening of the dura mater, which usually causes headache, cranial neuropathies, seizures, and motor or sensory impairments. The development of HP is attributed to an immune-mediated mechanism, and some autoimmune diseases have been implicated in the development of HP. Herein, we describe the case of a 73-year-old woman with persistent headache ascribable to HP, which developed approximately 3 years after a diagnosis of polyarteritis nodosa (PAN). She was treated with high-dose corticosteroid and cyclophosphamide that resulted in immediate disappearance of headache and improved radiological findings of thickened dura mater. In addition, she was subsequently administered methotrexate, ultimately resulting in maintenance of remission and regular reduction of prednisolone. In our review of published English articles, only two cases of HP in patients with PAN have been reported to date, suggesting that HP is a rare complication in PAN. However, it should be recognized that HP may develop as a neurological involvement related to PAN.

Keywords: Headache; Hypertrophic pachymeningitis; Polyarteritis nodosa.

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