Tongue diagnosis in Traditional Chinese Medicine (TCM) is an important component of TCM diagnostics. By observing changes in the tongue’s shape, color, texture, and other features, it is possible to assess a person’s health condition. The tongue state, which refers to the condition of the tongue during movement, is a key observation point in TCM tongue diagnosis. A normal tongue exhibits flexible, smooth, and unrestricted movements, indicating sufficient qi and blood, smooth meridians, and vigorous organ functions. Common pathological tongue states include a stiff tongue, a flaccid tongue, a tremulous tongue, a tilted tongue, a shortened tongue, and a tongue with a protruding or rolling motion. This article will provide a detailed description of these tongue states and their associated health issues, helping you understand your health status through TCM tongue diagnosis. 一. Stiff Tongue: A Warning for Heat Pathogens and Stroke A stiff tongue is often associated with heat…