{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T05:02:20Z","timestamp":1784091740329,"version":"3.55.0"},"reference-count":32,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2021,8,20]],"date-time":"2021-08-20T00:00:00Z","timestamp":1629417600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Dermatology"],"published-print":{"date-parts":[[2022,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Onychophagia is a common disorder affecting 20% to 30% of the general population. It is defined as habitual nail biting and can cause various changes in the nail units. However, to date, there has been a paucity of data focusing on nail deformities related to onychophagia. This study was performed to investigate the clinical characteristics of onychophagia in Korea.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This study included 53 patients with onychophagia who visited the Pusan National University Hospital (Busan and Yangsan) over a 10\u2010year period (2011\u20132020). We retrospectively reviewed medical records and clinical and dermoscopic photographs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All 10 fingernails were affected in 37.7% of the patients. The left thumbnail was the most predominantly affected site (81.1%). Clinical findings showed that short nails with ragged distal borders were the most common presentation (100.0%), followed by generalized or patchy rough areas (50.9%), linear and pinpoint hemorrhage (32.1%), longitudinal melanonychia (30.2%), transverse groove (28.3%), brittleness (28.3%), macrolunula (24.5%), washboard nail (13.2%), and pterygium (3.8%). Of the patients, 88.7% had periungual complications, such as periungual exfoliation (77.4%), absent or ragged cuticle (52.8%), hyponychial hyperkeratosis (37.7%), and paronychia (15.1%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Although onychophagia is a common disorder, its clinical characteristics have not been reported in the literature. The results of this study may be helpful in managing patients with onychophagia.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ijd.15861","type":"journal-article","created":{"date-parts":[[2021,8,20]],"date-time":"2021-08-20T19:44:59Z","timestamp":1629488699000},"page":"331-336","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Onychophagia: detailed clinical characteristics"],"prefix":"10.1111","volume":"61","author":[{"given":"Jun\u2010Oh","family":"Shin","sequence":"first","affiliation":[{"name":"Department of Dermatology School of Medicine Pusan National University Busan Korea"},{"name":"Department of Dermatology Pusan National University Yangsan Hospital Yangsan Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dongyoung","family":"Roh","sequence":"additional","affiliation":[{"name":"Department of Dermatology School of Medicine Pusan National University Busan Korea"},{"name":"Department of 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