Fissured Tongue
Fissured tongue, also known as a grooved tongue, is a non-cancerous condition [6] when the tongue becomes coated and wrinkled, with one or multiple cuts formed on the surface, and usually without pain. Dry mouth may cause a fissured tongue, identified by deep or shallow cuts. Generally, it is non-cancerous, non-contagious, and painless; however, the person may feel pain when food particles get trapped inside the cuts.
Fissured tongue is a common side effect of xenogenic drugs – medications that induce dry mouth. While the fissured tongue is generally asymptomatic, it may lead to oral discomfort.