Samman P D
Br J Dermatol. 1979 Dec;101(6):701-5. doi: 10.1111/j.1365-2133.1979.tb05650.x.
The term trachyonychia is a useful one to describe roughening of the surface of many nails due to various causes. Psoriasis and alopecia areata are responsible for some cases. Lichen planus can roughen nails but the change is usually limited to a few nails and accompanied by discomfort. In many cases no cause can be found and these cases are somewhat arbitrarily listed either as twenty nail dystrophy of childhood or severe nail dystrophy.
“糙甲症”这一术语是用于描述因各种原因导致许多指甲表面粗糙的一个有用词汇。银屑病和斑秃是部分病例的病因。扁平苔藓可使指甲变粗糙，但这种变化通常局限于少数指甲，并伴有不适感。在许多病例中，找不到病因，这些病例有些随意地被列为儿童二十甲营养不良或严重甲营养不良。
