Sporothrix schenckii is classically associated with which exposure?

Sporothrix schenckii is classically associated with which exposure?

• A. Cat scratches
• B. Rose thorns
• C. Ingestion of undercooked meat
• D. Inhalation of spores from soil

Answer: (B)

This question centers on how Sporothrix schenckii is acquired. It is a fungus that causes sporotrichosis after traumatic implantation from plant material into the skin, with rose thorns being the classic source. Gardeners and people handling decaying vegetation often develop a puncture wound that introduces the mold form into the skin, which then becomes pruritic nodules that ascend along the draining lymphatics—the classic “sporotrichoid” pattern. Understanding this helps connect the exposure to the disease. It’s a subcutaneous infection, not typically acquired by inhaling spores or ingesting meat. Cat scratches are more associated with Bartonella henselae (cat-scratch disease), and inhalation of soil spores points to other fungi like Histoplasma or Coccidioides, not Sporothrix.

This question centers on how Sporothrix schenckii is acquired. It is a fungus that causes sporotrichosis after traumatic implantation from plant material into the skin, with rose thorns being the classic source. Gardeners and people handling decaying vegetation often develop a puncture wound that introduces the mold form into the skin, which then becomes pruritic nodules that ascend along the draining lymphatics—the classic “sporotrichoid” pattern.

Understanding this helps connect the exposure to the disease. It’s a subcutaneous infection, not typically acquired by inhaling spores or ingesting meat. Cat scratches are more associated with Bartonella henselae (cat-scratch disease), and inhalation of soil spores points to other fungi like Histoplasma or Coccidioides, not Sporothrix.