<unk>  or<unk> 's lines (apparent leukonychia striata) are changes in the fingernail that may be a sign of an underlying medical condition. The term refers to a set of one or more pale transverse bands extending all the way across the<unk>  parallel to the lunula. In contrast to Beau's lines, they are not grooved (no 3-dimensional deformity), and in contrast to Mees' lines, the thumb is usually not involved.<unk> 's lines are a strong indicator of hypoalbuminemia, which can result from a variety of different causes. The lines are actually in the vascular bed underneath the<unk> plate. As such, they do not move with<unk> growth, and disappear when pressure is applied to the<unk> (blanching the underlying<unk> bed): this distinguishes them from "true leukonychia striata" such as Mees' lines. As in Terry's and half-and-half<unk> , the pattern is thought to be formed by bands of localized edema exerting pressure on the surrounding capillaries.
Muehrcke's nails
Terry's nails
Elschnig spots
Forchheimer spots
Racquet nail
Koplik's spots
Bitot's spots
Fordyce spots