Stephanofilariasis

• Caused by Stephanofilaria stilesi
• Occurs in cattle, buffalo, goats
• Transmitted by flies
• Affects ventral midline (other species affect different areas of body)
• Grossly:
  • Foci extending to large areas
  • Errect hairs, epidermal haemorrhage, serum exudate -> crusts
• Microscopically:
  • Superficial and deep perivascular dermatitis
  • Eosinophils, adult and microfilarial parasites
  • Epidermal hyperkeratosis, parakeratosis, acanthosis, eosinophilic microabscesses and crusts