31 Mar SEOUL — In a swank neighborhood renowned for designer boutiques and plastic surgery clinics, anxious parents drag frightened toddlers into Dr. Nam Il Woo's office and demand that he operate on the children's tongues. It is a simple procedure: Just a snip on a membrane and the tongue is supposedly. 15 Sep Tongue diagnosis is an important procedure in traditional Korean medicine (TKM ). In particular, tongue coating thickness (TCT) is deemed to show the progression of the disease. However, conventional tongue diagnosis has limitations because of various external factors. Therefore, it is necessary to. 10 Mar Fissured tongue is a benign condition affecting the top surface of the tongue. A normal tongue is relatively flat across its length. A fissured tongue is marked by a deep, prominent groove in the middle. There may also be small furrows or fissures.