isClassificationFor epilepsy A brain disease that is characterized by the occurrance of at least two unprovoked seizures resulting from a persistent epileptogenic abnormality of the brain that is able to spontaneously generate paroxysmal activity and typically manifested by sudden brief episodes of altered or diminished consciousness, involuntary movements, or convulsions. ICD9CM:345.9 UMLS_CUI:C0014544 EFO:0000474 disease_ontology MESH:D004827 ICD10CM:G40.9 DOID:1826 ICD10CM:G40.909 SNOMEDCT_US_2018_03_01:84757009 http://www.case.edu/EpSO.owl#Epilepsy epileptic syndrome epilepsy syndrome NCI:C3020 brain disease