(Cleft tongue; Fluted tongue; Ribbed tongue; Wrinkled tongue; Grooved tongue; Lingua plicata)
In the milder forms, this condition of the dorsal surface of the tongue is not rare. However, it varies greatly in the degree of prominence of its depressions. There may be a deepening of the central furrow; a number of indistinct parallel depressions; so many deep lines as to present a network of lines and elevations; or in the case of congenital or acquired enlargement (macroglossia) of the tongue, a cursory view of the organ will resemble a miniature relief map of valleys and mountains. This condition is rarely noticed in infancy or childhood although it may be congenital and will often show pronounced family tendencies.
Treatment is seldom necessary unless the malady is severe and persistent. Most people understand oral hygiene and know enough to keep the tongue as well as the teeth clean.