TY - CHAP M1 - Book, Section TI - Nail Disorders A1 - Haneke, Eckart A2 - Kang, Sewon A2 - Amagai, Masayuki A2 - Bruckner, Anna L. A2 - Enk, Alexander H. A2 - Margolis, David J. A2 - McMichael, Amy J. A2 - Orringer, Jeffrey S. Y1 - 2019 N1 - T2 - Fitzpatrick's Dermatology, 9e AB - The diagnosis and treatment of nail diseases require an in-depth knowledge of the anatomy, physiology, and pathology of the nail unit (see Chap. 8). It is an integral part of the tip of the digit, and its anatomy, growth characteristics, and functions vary between the different fingers and toes, which have to be considered when faced with a diseased nail. There are different ways to classify nail disorders and a compromise between a scientifically based etiologic classification and a more clinico-morphologically based one appears to be a practical approach to nail disorders. This chapter discusses specific nail changes either resulting from particular nail disorders or from dermatologic or systemic diseases, the peculiarities, including etiopathogenetic aspects, of which are not repeated here if they are not specific for the nail lesions. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/13 UR - accessmedicine.mhmedical.com/content.aspx?aid=1161326981 ER -