Jeanmougin M, Civatte J
Dermatologica. 1984;168(5):242-6.
2 apparently idiopathic cases of twenty-nail dystrophy of childhood are reported with follow-ups of 4 and 16 years, respectively. The associated koilonychia appears to be only fortuitous and related to the fragility of the nail. Trachyonychia should be considered as a symptom often related to external traumatism or dermatoses, particularly alopecia areata or lichen planus, of which it could be a specific isolated location. Within the spectrum of apparently idiopathic trachyonychies , the twenty-nail dystrophy of childhood appears to be a real entity on the basis of its clinical features and course.
报告了2例儿童20甲营养不良的明显特发性病例，随访时间分别为4年和16年。相关的匙状甲似乎只是偶然出现，与指甲的脆弱性有关。粗糙甲应被视为一种常与外部创伤或皮肤病相关的症状，特别是斑秃或扁平苔藓，粗糙甲可能是其特定的孤立表现部位。在明显特发性粗糙甲的范围内，儿童20甲营养不良基于其临床特征和病程似乎是一种真实的疾病实体。
