Suthinee RutninJennifer V. NguyenChristopher J. MillerDanielle DehoratiusAdam I. RubinUniversity of PennsylvaniaMahidol University2018-06-112018-06-112012-11-01Journal of Cutaneous Pathology. Vol.39, No.11 (2012), 1030-103416000560030369872-s2.0-84867574088https://repository.li.mahidol.ac.th/handle/20.500.14594/14569Localized longitudinal erythronychia describes a solitary red streak limited to a single nail unit. Localized longitudinal erythronychia can be caused by both benign and malignant entities. Most commonly, the cause is a benign process, such as an onychopapilloma. We report a case of an acquired subungual arteriovenous malformation that presented as localized longitudinal erythronychia during pregnancy. To our knowledge, this is the first report of localized longitudinal erythronychia arising from a pregnancy-associated arteriovenous malformation of the nail unit. Copyright © 2012 John Wiley & Sons A/S.Mahidol UniversityMedicineArticleSCOPUS10.1111/j.1600-0560.2012.01966.x