Migratory glossitis, also known as geographic tongue, is a benign, chronic, relapsing-recurring inflammatory / immune-mediated condition of the oral cavity of unknown etiology. The tongue's dorsal surface develops sharply demarcated, smooth, erythematous, serpiginous, depapillated patches with light / white borders that change in size, shape, and location over hours to days. The tongue is the most common site of occurrence, but other parts of the mouth may also be affected.

Migratory glossitis is seen in approximately 1%-2% of the population. It may begin in childhood but can affect adults; females are twice as likely to be affected. The condition is associated with the presence of psoriasis. It is also often seen in conjunction with fissured tongue. Migratory glossitis incidence is inversely related to tobacco use.

The lesional areas are most often asymptomatic, but some patients may complain of a burnt or raw sensation. Eating hot or spicy foods will increase these symptoms. As a result, patients tend to avoid acidic and spicy foods when the lesions are present. Migratory glossitis waxes and wanes and is present for decades.