has symptom brain infarction brain stem infarction SNOMEDCT_US_2025_09_01:95457000 A brain infarction that is characterized by stroke of the brain stem that develops from blockage or narrowing in the arteries located_in the brainstem, has_material_basis_in damage to the cranial nerve nuclei and long tracts, has_symptom vertigo, has_symptom imbalance, has_symptom decreased level of arousal. Brainstem infarction UMLS_CUI:C0521542 MESH:D020526 DOID:3523 disease_ontology loss of balance vertigo hoarseness