• Chih-An Wang, Wen-Che Hsieh, Tzu-Ju Hsu, Fuu-Jen Tsai, and Chao-Yu Hsu.
• Division of Respiratory Therapy, Ditmanson Medical Foundation, Chia-Yi Christian Hospital, Chia-Yi, Taiwan.
• Postgrad Med. 2024 Jan 1; 136 (1): 222922-29.

ObjectiveDiseases associated with chronic pain are typically a major source of stress for patients; and have been linked to herpes zoster (HZ) development. Here, we investigated whether obstructive sleep apnea (OSA) is a potential stressor that increases the risk of HZ and postherpetic neuralgia (PHN) in affected individuals.MethodsThe data used in this study were obtained from the National Health Insurance Research Database. The study cohort included patients aged between 20 and 100 years who had OSA during the period from 2000 to 2017 (with tracking completed until 2018). The case group and the control group were matched at a 1:1 ratio on the basis of age, sex, comorbidities, and index year, with patients who had outcomes before the index date being excluded. The outcomes considered in this study were HZ and PHN. The risk of HZ and PHN with and without OSA was calculated, and age, sex, comorbidities, and index year were adjusted for.ResultsThere were 25,211 patients in each group. Patients with OSA had a significantly higher risk of HZ (adjusted hazard ratio [aHR] = 1.22) than those without did. The patients with OSA had also a significantly higher risk of PHN (aHR = 1.36) than those without did. In term of comorbidities, the patients with OSA without (aHR = 1.28) and with (aHR = 1.17) comorbidities had a significantly higher risk of HZ compared with those without OSA. In addition, the patients with OSA but no other comorbidities (aHR = 1.68) had a significantly higher risk of PHN than those without did.ConclusionOSA increases the risk of not only HZ but also PHN. Therefore, patients with OSA should be aware of the potential effect of the disease on their stress levels, as well as the increased risk of developing HZ and PHN.

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