详细解释:【医】 肌强直性营养不良
英语解释：
名词 myotonic dystrophy:
a severe form of muscular dystrophy marked by generalized weakness and muscular wasting that affects the face and feet and hands and neck; difficult speech and difficulty with the hands that spreads to the arms and shoulders and legs and hips; the onset can be any time from birth to middle age and the progression is slow; inheritance is autosomal dominant同义词：myotonic muscular dystrophy, myotonia atrophica, Steinert's disease