[How I investigate...a burning mouth]

Burning mouth is a symptom typical for the oral mucosa. In contrast, pruritus is absent at this site. The situation which is the reverse on the skin can be explained by microanatomical differences in the sensorial innervation and by a different balance between neuromediators. Burning mouth sensation calls for the search of a series of diseases. However, it is most often a monosymptomatic expression of a minimal lichenoid stomatitis.