cheilosis

(medicine) Cracking at the corners of the mouth and scaling of the lips, usually associated with riboflavin deficiency.

Cracking of the edges of the lips, one of the clinical signs of vitamin B₂ (riboflavin) deficiency.

A noninflammatory condition of the lip usually characterized by chapping and fissuring. It is characteristic of either vitamin B complex deficiency of the mouth orifice or monilial infection.

Fissuring and dry scaling of the lips and angles of the mouth, a characteristic of riboflavin deficiency.