RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
A brain stem infarction that is characterized by hoarseness, dizziness, nausea, located_in the lateral part of the medulla oblongata that develops from a blockage in the posterior inferior cerebellar artery or one of its branches or of the vertebral artery, has_symptom vertigo, has_symptom ipsilateral cerebellar signs, has_symptom contralateral sensory deficits of limbs and torso, has_symptom ipsilateral sensory deficits of face, has_symptom laryngeal, pharyngeal, and palatal hemiparalysis, has_symptom ipsilateral Horner's syndrome. (DO)