Thomsen and Becker disease https://www.malacards.org/card/batten_turner_congenital_myopathy NANDO:1200497 NANDO:1200498 MedDRA:10028655 MONDO:0009710 ICD10CM:G71.12 NCIT:C84912 SCTID:726051002 MedDRA:10043461 DOID:2106 A rare, genetic, skeletal muscle channelopathy characterized by slow muscle relaxation after contraction (myotonia). GARD:0012301 MESH:D009224 Orphanet:614 myotonia congenita ICD9:359.22 obsolete congenital myotonia muscular channelopathy congenital myopathy