Lichen striatus is an uncommon, self-limited dermatosis, most often presenting in children 5 to 10 years of age. Cases in adults have rarely been reported. In most reports, females are affected 2 to 3 times more frequently than males. However, in a recent publication detailing 12 European cases, males were affected 3 times more frequently than females.1 Among these 12 patients, 2 had nail involvement, which brings the total number of reported cases of lichen striatus of the nails to 20 worldwide.1-5 Cutaneous lesions of lichen striatus are small, flesh-colored papules that develop in a linear distribution over a period of weeks, usually on the extremities. Most cases involve only the skin. However, nail involvement with the typical skin changes, as well as nail involvement alone, has been reported.2 Typically, lesions resolve spontaneously in 3 to 12 months, although the presence of nail involvement can signal a more protracted course.1,4
Leposavic R, Belsito DV. Onychodystrophy and Subungual Hyperkeratosis Due to Lichen Striatus. Arch Dermatol. 2002;138(8):1099–1100. doi:10.1001/archderm.138.8.1098
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