Sporotrichosis

Basics

“Rose gardener's disease”
Lymphocutaneous:
- Most common form
- Traumatic inoculation of fungus (Sporothrix schenckii) into skin/soft tissue
- Solitary nodule with or without distal to proximal lymphocutaneous spread
- Secondary to animal bites/scratches, especially from cats, trauma
- Increased risk: Farmers, gardeners, landscapers, forestry workers, veterinarians
Pulmonary:
- Inhalation of S. schenckii spores aerosolized from soil/plant decay
- Increased risk: Alcoholics COPD, steroid users
Multifocal extracutaneous:
- Cutaneous inoculation and hematologic spread
- Increased risk: Immunosuppressed patients

Fungal infection caused by S. schenckii:
Dimorphic fungus
Occurs as mold on decaying vegetation, moss, and soil in temperate and tropical environments
Animal vectors, notably cats and armadillos
Common environmental exposure: Rose bushes, hay bales, sphagnum moss, conifer seedlings

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