DO_infectious_disease_slim DO_rare_slim NCIthesaurus has material basis in has symptom disease has feature filariasis onchocerciasis 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. DOID:11678 UMLS_CUI:C0029001 MESH:D009855 disease_ontology ICD10CM:B73 ICD9CM:125.3 Infection by Onchocerca volvulus Onchocerca volvulus infection SNOMEDCT_US_2025_09_01:38539003 GARD:7252 NCI:C34861 volvulosis dermatitis Onchocerca volvulus blindness eczema itching enlargement of lymph nodes lymphadenopathy