Trichoscopy is the dermoscopic imaging of the scalp and hair. The method is based on dermoscopy and videodermoscopy and is used for the evaluation and diagnosis of hair and scalp diseases. This book is a step by step guide to trichoscopy for practising dermatologists and trainees. Beginning with an overview of devices and tools, and trichoscopic terminologies, the following sections cover the diagnostic imaging of many different hair and scalp disorders, including alopecia, hair weathering, infection and infestation, psoriasis, and more. Algorithms and numerous photographs are included for self-assessment in the diagnosis of different disorders. The previous edition (9789386150745) published in 2017.