Linear lichen planus mimicking creeping eruption.

A 42-year-old woman was referred to our hospital with a linear eruption on her right flank of two months duration. Because she had eaten loach-fish a month before she noticed the eruption, a creeping eruption due to Gnathostoma spp. was initially suspected, but the histological findings of the biopsy specimens showed typical features of lichen planus. Linear lichen planus is discussed based on the cases accumulated in the literature regarding the distribution of Blaschko lines.