Stomatitis of exposure to the allergen. Migratory stomatitis (or geographic stomatitis) is an atypical presentation of a condition which normally presents on the tongue, termed geographic tongue. Geographic tongue is so named because there are atrophic, erythematous areas of depapillation that migrate over time, giving a map-like appearance. In migratory stomatitis, other mucosal sites in the mouth, such as the ventral surface (undersurface) of the tongue, buccal mucosa, labial mucosa, soft palate, or floor of mouth may be afflicted with identical lesions, usually in addition to the tongue. Apart from not being restricted to the tongue, migratory stomatitis is an identical
Supernumerary body part considered to have lost much or all of their original function through evolution. These body parts can be classed as additional to the required functioning of the body. In human anatomy the vermiform appendix is sometimes classed as a vestigial remnant. Prosthesis is an artificial extension that replaces a body part, and cybernetics is the study of computer technology in relation to organisms which can include replacement or additional body parts. Body integrity identity disorder (BIID) is a psychiatric disorder in which a person thinks that they have one or more additional limbs than they should, despite having two arms