Zusammenfassung
Unter begünstigenden Voraussetzungen können auch Schimmelpilze Infektionen der Haut verursachen. Fusarien gehören zu dieser Erregergruppe. Onychomykosen durch Fusarien kommen regelmäßig vor und lassen sich klinisch nicht von Dermatophyten-bedingten Nagelinfektionen unterscheiden. Sie können auch bei sonst Gesunden auftreten. An der Haut können Fusarien nekrotisierende, ulzerierende, pustulöse, vaskulitisartige, pannikulitisartige und granulomatöse Läsionen verursachen. Einzelne Läsionen können Folge einer Erregerinokulation in geschädigtes Gewebe sein, multiple sind oft Folge einer Fusariensepsis bei stark immungeschwächten Patienten. Eine sofortige Erregerdiagnostik kann in solchen Fällen lebensrettend sein. Pathogene Fusarien sollten auf Speziesebene identifiziert und auf ihre Antimykotikaempfindlichkeit getestet werden. Bei multiplen Läsionen ist eine systemische Therapie nach Antimykogramm angezeigt. Viele Fusarienstämme sind sensibel gegen Amphotericin B, Voriconazol und Posaconazol, Itraconazol und Terbinafin können im Einzelfall hilfreich sein.
Abstract
Under favorable conditions even molds can cause skin infections. Fusarium spp. belong to this group of agents. Onychomycoses due to Fusarium spp. are regularly encountered and cannot be clinically distinguished from nail infections triggered by dermatophytes. They can occur in otherwise healthy persons. Skin lesions caused by Fusarium spp. may be necrotizing, ulcerating, pustular, vasculitis-like, panniculitis-like or granulomatous. Single lesions can develop after fungal inoculation into damaged tissue; multiple ones are often due to a septic dissemination of Fusarium in severely immunocompromised patients. An immediate verification of the agents can be life-saving in such cases. Pathogenic Fusarium spp. should be identified at the species level and need to be tested for their susceptibility to antimycotics. In case of multiple lesions, systemic therapy is required. Many strains of Fusarium spp. are susceptible to amphotericin B, voriconazole and posaconazole; itraconazole and terbinafine may be helpful in certain cases.
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Brasch, J. Dermatomykosen durch Fusarien. Hautarzt 63, 872–876 (2012). https://doi.org/10.1007/s00105-012-2382-3
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DOI: https://doi.org/10.1007/s00105-012-2382-3