Abstract
Intractable or persistent hiccups and nausea (IHN) are rarely associated with herpes zoster (HZ-IHN). We aimed to identify the clinical characteristics of HZ-IHN by comparing them with those of neuromyelitis optica spectrum disorder associated with IHN (NMOSD-IHN). We collected 8 patients with HZ-IHN and 12 patients with NMOSD-IHN diagnosed between 2002 and 2020 from medical databases. Medical records including clinical information, laboratory data on serum anti-aquaporin 4 (AQP4) antibodies, serological or cerebrospinal fluid findings for the varicella zoster virus, medullary MRI findings, and efficacy of intravenous methylprednisolone pulse (IVMP) therapy were analyzed retrospectively. The age of onset (69 ± 13 years versus 46 ± 17 years, P = 0.003), percentage of men [7/8 patients (88%) versus 3/12 patients (25%), P = 0.020], serum CRP levels (1.41 ± 1.17 mg/dL versus 0.14 ± 0.33 mg/dL, P = 0.018), and frequency of hemi-cranial nerve involvement [6/8 patients (75%) versus 1/12 patients (8%), P = 0.004] were significantly higher in patients with HZ-IHN than in those with NMOSD-IHN. The hypoglossal and vagus nerves were involved in 5/8 patients (63%) with HZ-IHN. Other clinical parameters, excluding anti-AQP4 antibodies, were ...Continue Reading
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