This concise practical guide is designed to facilitate the diagnosis of nail disorders though presentation of clinical cases. Each case will drive the reader to the correct diagnosis following simple steps that will be specifically indicated for each case. These include dermoscopic evaluation, pathology and the use of other specific tools depending on the diagnosis. Each case will also include a narrative description and patient management tips. Consequently, Clinical Cases in Nail Disorders is an important tool to help all physicians managing these patients, from dermatologists and nail specialists through to primary care physicians.