Article Publish Status: FREE
Abstract Title:

Plasma Vitamin C Concentrations Were Negatively Associated with Tingling, Prickling or Pins and Needles Sensation in Patients with Postherpetic Neuralgia.

Abstract Source:

Nutrients. 2020 Aug 9 ;12(8). Epub 2020 Aug 9. PMID: 32784896

Abstract Author(s):

Li-Kai Wang, Yao-Tsung Lin, Kuo-Chuan Hung, Chia-Yu Chang, Zhi-Fu Wu, Miao-Lin Hu, Jen-Yin Chen

Article Affiliation:

Li-Kai Wang


Vitamin C deficiency increases the risk of postherpetic neuralgia (PHN). In this cross-sectional study, the relationships among plasma vitamin C concentrations, pain and Leeds assessment of neuropathic symptoms and signs (LANSS) items were investigated during their first pain clinic visit of 120 PHN patients. The factors associated with vitamin C deficiency were determined. Independent predictors of vitamin C deficiency were presented as adjusted odds ratios (AOR) and 95% confidence intervals (CI). The patients had a high prevalence (52.5%) of vitamin C deficiency. Their plasma vitamin C concentrations were negatively associated with spontaneous pain and tingling, prickling or pins and needles sensation according to the LANSS questionnaire. Based on the receiver operator characteristic curve, the cutoffs for plasma vitamin C to predict moderate-to-severe and severe symptoms of sharp sensation were<7.05 and<5.68 mg/L, respectively. By comparison, the patients well-nourished with vitamin C had lower incidences of sharp sensations, sharp pain, and reddish skin. Multivariate analyses revealed that vitamin C deficiency was associated with the low intake of fruit/vegetables (AOR 2.66, 95% CI 1.09-6.48,= 0.032), peptic ulcer disease (AOR 3.25, 95% CI 1.28-8.28,= 0.014), and smoking (AOR 3.60, 95% CI 1.33-9.77,= 0.010). Future studies are needed to substantiate these findings.

Study Type : Human Study
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