Fly Dermatosis

Flies

• Bites may cause irritation, anaemia, toxicity or hypersensitivity
• Grossly:
  • Wheals and papules around puncture wound
  • Hair loss, scales, crusts, erythema
• Microscopically:
  • Superficial perivascular dermatitis
  • Eosinophilic folliculitis, +/- furunculosis
  • Intraepidermal pustules
  • Eosinophils and necrosis