filariasis onchocerciasis MESH:D009855 disease_ontology ICD10CM:B73 A filariasis that involves parasitic infection caused by the nematode Onchocerca volvulus, which is transmitted to humans through the bite of a blackfly of the genus Simulium. The worms spread throughout the body and, when they die, cause intense itching and a strong immune system response that can destroy nearby tissue. The symptoms include pruritus, dermatitis, blindness, onchocercomata (subcutaneous nodules), and lymphadenopathy. ICD9CM:125.3 DOID:11678 Infection by Onchocerca volvulus Onchocerca volvulus infection UMLS_CUI:C0029001 GARD:7252 SNOMEDCT_US_2020_03_01:38539003 NCI:C34861 volvulosis