noun
myotonic dystrophy
A genetic disorder characterized by progressive muscle wasting and myotonia. Medical term.
筋緊張性ジストロフィー症は遺伝性の病気です。
Myotonic dystrophy is a hereditary disease.
Compound of 筋緊張性 (myotonic) + ジストロフィー (dystrophy) + 症 (disease/syndrome).