Book excerpt: The aim of this atlas is to provide detailed and comprehensive, easy-to-use information, sufficient to perform trichoscopy in clinical practice. From basics to advanced knowledge, everything in one book. In this sense it is rather an “illustrated textbook” than solely an atlas. It includes evidence based information, acknowledged algorithms, which help easy diagnosis and “take home messages”, which aid memorizing specific features of diverse diseases. The atlas consists of two major parts. In the first part the authors describe structures and patterns seen in trichoscopy. The second part consists of detailed description of characteristic trichoscopy features of diverse diseases of hair and scalp. Consecutive chapters illustrate genetic hair disorders, acquired hair loss and scalp diseases.