multiple sclerosis A demyelinating disease that involves damage to the fatty myelin sheaths around the axons of the brain and spinal cord resulting in demyelination and scarring. DOID:2377 EFO:0003885 Generalized multiple sclerosis (disorder) ICD10CM:G35 ICD9CM:340 MESH:D009103 NCI:C3243 OMIM mapping confirmed by DO. [LS]. OMIM:612594 OMIM:612595 OMIM:612596 SNOMEDCT_US_2016_03_01:155023009 SNOMEDCT_US_2016_03_01:192928003 SNOMEDCT_US_2016_03_01:192930001 SNOMEDCT_US_2016_03_01:24700007 UMLS_CUI:C0026769 disease_ontology insular sclerosis demyelinating disease