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Pseudallescheria/Scedosporium Infection

Environmental fungi causing disseminated disease.

Key Information

  • Prevalence: Rare; water exposure
  • Infectious disease requiring diagnosis and treatment
  • Prevention measures vary by transmission mode
  • Prognosis varies significantly by pathogen and host factors

About Pseudallescheria/Scedosporium Infection

Environmental fungi causing disseminated disease.

For comprehensive information about prevention, diagnosis, treatment, and epidemiology, consult with an infectious disease specialist or your healthcare provider.

Frequently asked

Common questions about Pseudallescheria/Scedosporium Infection.

Quick, plain-English answers to what people ask us most.

  • What is Pseudallescheria/Scedosporium infection?

    This is an infection caused by Scedosporium fungi (formerly classified under Pseudallescheria), found in soil and water, which can cause a range of infections from localised skin problems to serious lung or disseminated infection, particularly in people with weakened immunity.

  • What causes this infection?

    Infection occurs through inhalation of fungal spores from the environment or through contamination of wounds, particularly following trauma involving soil or water contact, such as near-drowning incidents.

  • What are the symptoms?

    Symptoms depend on the site of infection, ranging from localised skin or wound infection to more serious lung symptoms (cough, breathlessness) or, in disseminated disease, symptoms affecting multiple organs.

  • Is this infection dangerous?

    Yes, particularly in people with weakened immune systems, where it can cause serious, sometimes life-threatening disseminated infection; in otherwise healthy people, localised infections are generally less severe but still need proper treatment.

  • How is this infection treated?

    Treatment typically involves specific antifungal medication, chosen carefully as this fungus can be resistant to some standard antifungal drugs, alongside surgical removal of infected tissue when relevant.

  • How is this infection diagnosed?

    Diagnosis involves culturing the fungus from an infected site, sometimes combined with tissue biopsy and specialised laboratory identification, given how this fungus can resemble other, more common fungal infections.

  • How long does treatment take?

    Treatment duration varies considerably depending on the extent and location of infection, from a few weeks for localised infections to a much longer course for disseminated disease in immunocompromised patients.

  • Who is most at risk of this infection?

    People with significantly weakened immune systems, such as those with certain cancers, organ transplants, or on long-term immunosuppressive treatment, are at higher risk of serious infection, as are people who've had near-drowning incidents.

  • This infection vs more common fungal infections — what's the difference?

    Scedosporium is less common than fungi like Aspergillus or Candida but can behave similarly in causing lung or disseminated infection; it's important to identify specifically, as it can be resistant to some standard antifungal treatments used for more common fungi.

  • When should I see a specialist, and how quickly can I be seen privately?

    See an infectious disease specialist promptly for suspected fungal infection, particularly with weakened immunity. Private specialist assessment is typically available within about two weeks, though significant symptoms in an immunocompromised person need urgent same-day assessment.