这类病变发病率的文献报导差异很大,由0.1～34%。为了研究其病因及临床特点,作者检查了2540名5～17岁儿童及少年,检查法也括听觉评价、耳鼻喉检查,必要时辅以显微喉镜及动态镜检查。受检者分三组:Ⅰ、学生2000名,有发声障碍者75名(3.7%),其中器质性病变36名(小结19,喉炎17),功能性者35名,变声期紊乱4名;Ⅱ、儿童合唱团员325人中,有发声障 The incidence of these diseases reported in the literature varies widely, from 0.1 to 34%. In order to study its etiology and clinical features, the author examined 2540 children and adolescents aged 5 to 17, including auditory evaluation method, ENT examination, if necessary, supplemented by microlaryngoscope and dynamic microscopy. Subjects were divided into three groups: Ⅰ, 2000 students, 75 (3.7%) with dysphonia, including 36 organic diseases (summary 19, laryngitis 17), 35 were functional, the voice change disorder 4 Name; Ⅱ, 325 children choir members, with sound barrier