Onchocerca volvulus



Onchocerca volvulus, or Onchocerca for short, is a nematode or roundworm parasite transmitted to humans through bites from the black fly. The disease that Onchocerca causes is Onchocerciasis.Clinically, onchocerciasis presents with eye involvement and vision loss, subcutaneous nodules, and pruritus. Infections with onchocerca can be treated with Ivermectin.

Key Points

  • Onchocerca volvulus
    • Characteristics
      • Type of nematode (roundworm) parasite
    • Transmission
      • Bite of blackfly
    • Presentation: Onchocerciasis
      • Eye involvement
      • Subcutaneous nodules
      • Pruritis
    • Diagnosis
      • Skin snip biopsy is gold standard
    • Treatment
      • Ivermectin