This document provides a summary of various conditions that affect the tongue, including fissured tongue, median rhomboidal glossitis, benign migratory glossitis, hairy tongue, crenated tongue, foliate papillitis, and leukokeratosis nicotine glossitis. For each condition, it describes the classification, etiology, clinical features, diagnosis, and treatment options. A team of doctors presented the information, which was organized into sections on classification, introduction, etiology, clinical features, diagnosis, and treatment of tongue conditions.