DO_infectious_disease_slim has material basis in has symptom viral hepatitis hepatitis D A viral hepatitis that results_in inflammation located_in liver, has_material_basis_in Hepatitis delta virus, which is an incomplete virus that requires the helper function of Hepatitis B virus to replicate and only occurs among people who are infected with the Hepatitis B virus (Orthohepadnavirus hominoidei). The infection has_symptom fatigue, has_symptom lethargy, has_symptom anorexia, has_symptom nausea, has_symptom jaundice, has_symptom clay-colored stools, has_symptom dark urine, has_symptom changes in personality, has_symptom disturbances in sleep, has_symptom confusion, has_symptom abnormal behavior, has_symptom somnolence, and has_symptom coma. Hepatitis delta virus, also known as Hepatitis D virus, is not a single viral species but a group of viruses from the genus Deltavirus including Deltavirus italiense, Deltavirus japanense, Deltavirus peruense, Deltavirus taiwanense, Deltavirus togense, Deltavirus carense, Deltavirus cameroonense, Deltavirus senegalense. UMLS_CUI:C0011226 DOID:2047 DOID:2046 disease_ontology SNOMEDCT_US_2025_09_01:424460009 MESH:D003699 delta hepatitis Orthohepadnavirus hominoidei Deltavirus confusion drowsiness lethargy liver inflammation nausea anorexia jaundice sleep disturbance coma abnormal behavior fatigue acholic stool dark urine