Equine sporotrichosis

Veterinary advice should be sought before applying any treatment or vaccine.

Equine Sporotrichosis

Rose Thorn Disease

Equine sporotrichosis is a cutaneous and subcutaneous fungal skin infection in horses, caused by Sporothrix schenckii. S. schenckii is a type of dimorphic fungus that is found in soil, plants, and decaying vegetation worldwide. It is particularly common in tropical regions and during periods of high humidity where temperatures promote fungal growth.

Horses become infected with S. schenckii usually through open skin wounds that become contaminated with soil or plant material containing the organism.


Skin nodules
Lesions ulcerate and drain a creamy red-brown to yellow discharge
Firm, cord-like lymph nodes


  • History
  • Clinical signs
  • Physical exam
  • Skin cytology
  • Histopathology
  • Immunoflurescent antibody testing



Ethylene diamine dihydroiodide (EDDI) (organic iodide powder)Administered as an oral feed additive, at a dosage of 1-2 mg/kg twice daily for the first week, then reduced to 0.5-1 mg/kg once daily for one month
Sodium iodide
Potassium iodide
Alternative therapy systemic ketaconazole or itraconazole



good to excellent

Scientific Research

General Overviews

Risk Factors

  • Open wounds, left untreated

Causative agent