Apostolski, Slobodan (7004532054)Slobodan (7004532054)ApostolskiRakocevic-Stojanovic, Vidosava (6603893359)Vidosava (6603893359)Rakocevic-Stojanovic2025-07-022025-07-022010https://doi.org/10.1002/9781444317008.ch61https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885506711&doi=10.1002%2f9781444317008.ch61&partnerID=40&md5=29ac6accfe8fdce0d9a46285e7588b8chttps://remedy.med.bg.ac.rs/handle/123456789/14073[No abstract available]Atrophy and weakness of sternomastoids and hyperlordosis of neck ("swan neck")Electromyogram (EMG) investigation - revealing electrical myotoniaGastrointestinal symptoms - in as many as 80% of patientsIridiscent posterior subcapsular cataracts (metachromatic or "Christmas tree") - found by slit-lamp examinationMyotonic dystrophy (DM, dystrophia myotonica or Steinert's disease) - most common form of muscular dystrophy in adultsMyotonic dystrophy type 1 (DM1)Myotonic dystrophy type 1 (DM1), by aberrantly expanded CTG repeat in 3′-untranslated region of DM protein kinase (DMPK) geneMyotonic dystrophy type 2 (DM2)Prevalence of DM1 - approximately 5 per 100 000 in American and European populations