Which traditional Chinese medical practice involves diagnosing a health problem by inspecting the tongue?

The practice that involves diagnosing a health problem by inspecting the tongue is known as glossoscopy. This method is an important aspect of traditional Chinese medicine (TCM), where practitioners analyze the color, shape, coating, and other characteristics of the tongue to gain insights into a patient’s overall health and specific issues. Each area of the tongue is believed to correspond to different organs and systems in the body, making it a valuable diagnostic tool in TCM.

The other terms listed - anamnesis, sphygmopalpation, and osphretics - pertain to different aspects of diagnosis or medical investigation. Anamnesis refers to a patient's medical history and verbal account of their condition, while sphygmopalpation is a method involving the examination of the pulse. Osphretics relates to the sense of smell and does not involve tongue inspection at all. Thus, glossoscopy is specifically the correct term associated with the diagnostic technique of tongue examination in traditional Chinese medicine.