Terrafirma-forme皮肤病(TFFD),也被称为邓肯肮脏的皮肤病,是一种角质化疾病,其特征是天鹅绒般的,深棕色-黑色斑点,和斑块,与全身性疾病无关。病变很少显示疣状或网状外观。尤其是,在儿童和青少年中,脖子,脸,躯干,脚踝是最常受影响的区域。TFFD是一种在不能用肥皂清洁的儿童和青少年中应该怀疑的疾病,特别是如果颈部区域看起来很脏。在这篇文章中,我们报告3例诊断为黑棘皮病的TFFD。TTFD应包括在表现为色素沉着斑和斑块的青少年病例的鉴别诊断中。尤其是在颈部等杂物区域。
Terra firma-forme dermatosis (TFFD), also known as Duncan\' dirty dermatosis, is a keratinization disorder that is characterized by velvety, dark brown-blackish patches, and plaques and is not associated with systemic diseases. The lesions rarely show a verrucous or reticulate appearance. Especially, in children and adolescents, neck, face, torso, and ankles are the most frequently affected areas. TFFD is a condition that should be suspected in children and adolescents that cannot be cleaned with soap, especially if the neck area looks dirty. In this article, we report 3 cases with a diagnosis of TFFD resembling acanthosis nigricans. TTFD should be included in the differential diagnosis of adolescent cases presenting with hyperpigmented patches and plaques, especially in intertriginous areas such as the neck.