劍橋詞典a movement disorder in which the head or an arm or leg is put into an unnatural position 張力障礙（肌肉張力紊亂） Dystonias are limited to specific parts of the body , for example the neck . 張力障礙衹會出現(xiàn)在身躰的某些部分，如頸部。 返回 dystonia