Trigeminotrophic ulceration of the ala nasi in a patient with Wallenberg'ssyndrome

A patient developed a trophic ulceration of the nose after an acute bulbar ischemia with infarction of the right trigeminal nuclei. Neurologic examina tion showed symptoms of a Wallenberg syndrome including ipsilateral hyp- an d paresthesia of the second trigeminal branch and disturbed sensibility and temperature sense on the contralateral half of the body. The right ala nas i showed the characteristic sickle-shaped defect (ulceration en arc). The d ifferential diagnosis and therapeutic approaches are discussed.