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J Dermatol. 2018 Dec;45(12):1389-1395. doi: 10.1111/1346-8138.14656. Epub 2018 Oct 8.

Demographic and clinical features of hidradenitis suppurativa in Korea.

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Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.
Department of Dermatology, Korea University College of Medicine, Seoul, Korea.
Department of Dermatology, Hallym University College of Medicine, Anyang, Korea.
Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
Department of Dermatology, Hanyang University College of Medicine, Seoul, Korea.
Department of Dermatology, National Medical Center, Seoul, Korea.
Department of Dermatology, University of Ulsan College of Medicine, Seoul, Korea.
Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea.
Department of Dermatology, Yonsei University College of Medicine, Seoul, Korea.
Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea.
Department of Dermatology, Kosin University College of Medicine, Busan, Korea.
Department of Dermatology, Ewha Womans University School of Medicine, Seoul, Korea.


Hidradenitis suppurativa (HS) is a chronic, relapsing, inflammatory skin disorder. Although several epidemiological studies have been conducted in Western countries, such data regarding Asian populations are scarce. In this study, we sought to investigate the demographic and clinical features of HS in Korea. A total of 438 patients, diagnosed with HS from May 2007 to April 2017, were enrolled and the electronic medical record of each patient was reviewed. Male patients were predominant with a male : female ratio of 2.5:1. Mean age of disease onset was 23.9 years and most patients had no family history. The most frequently affected area was the buttocks, followed by axillae and groin. Acne and diabetes mellitus were the most prevalent associated diseases and no patients with inflammatory bowel diseases were observed. In the univariable analysis, male patients had severe diseases compared with females with an odds ratio (OR) of 1.790. Two or more affected body regions were associated with HS severity with an OR of 1.693. While involvement of the perineum (OR, 4.067) and buttocks (OR, 1.471) tended to be associated with increased severity of the disease, the inguinal area (OR, 0.620) showed a tendency to be inversely associated with the severity. In multivariable analysis, identified risk factors were the involvement of the perineum (OR, 3.819) and buttocks (OR, 2.288). Smoking status and high body mass index seemed to be associated with more severe diseases. Our results will provide clinical characteristics of HS patients in Asia and help to broaden understanding of HS.


Asia; epidemiology; hidradenitis suppurativa; severity; treatment

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