myotonic dystrophy type 1 UMLS_CUI:C0027126 MIM:160900 DOID:11722 GARD:8310 MESH:D009223 NCI:C84914 disease_ontology ICD10CM:G71.11 ICD9CM:359.21 SNOMEDCT_US_2025_09_01:1177122009 A myotonic disease that is characterized by progressive muscle wasting and weakness affecting the distal skeletal and smooth muscles of lower legs, hands, neck, and face along with myotonia and cataracts and has_material_basis_in the autosomal dominant inheritance of the DMPK gene containing an expansion of a CTG trinucleotide repeat in the non-coding region. Dystrophia myotonica OMIM mapping confirmed by DO. [SN]. Steinert disease congenital myotonic dystrophy myotonic dystrophy of Steinert muscular dystrophy