DO_infectious_disease_slim NCIthesaurus has material basis in has symptom disease has feature gastric ulcer viral gastritis NCI:C27184 UMLS_CUI:C0563238 SNOMEDCT_US_2025_09_01:285344007 disease_ontology DOID:2327 A gastrointestinal system infectious disease that involves inflammation of the stomach lining caused by viruses. The symptoms include abdominal pain, indigestion, ulcer formation, abdominal bloating, nausea and vomiting. gastritis viral infectious disease Viruses bloating dyspepsia abdominal pain nausea vomiting