[Symptom: changes at the corners of the mouth (author's transl)].

The multiplicity of the pathological changes discussed have already been called many names: rhagades, perlèche, angular cheilosis, interlabial mycosis. It is often a poly-etiologic disease picture the causes of which must be recognized and then if necessary be clarified in greater detail by close interdisciplinary cooperation. Beside the common internal and dermatological diseases which may lead to changes at the angles of the mouth it is intended to show which dental and stomatological considerations are to be included in the differential diagnosis and therapy of this symptom complex.