Dermatoscopy is an important component in the diagnosis of pigmented and non-pigmented skin changes. The algorithmic method for diagnosis presented here has its origins in pattern analysis. It follows a logical structure and places great emphasis on simple, easily understandable, and clearly defined terms. The richly illustrated book aims to encourage readers to joyfully explore the morphological diversity of the dermatoscopic world themselves. A morphological technique like dermatoscopy is mastered only when one develops their own style, which unfolds over time, supported by personal experience. However, without a systematic method to help categorize and organize observations, every experience ultimately remains anecdotal. Pattern analysis is a powerful tool.