应注意与急性喉气管支气管炎、急性会厌炎、喉水肿、喉痉挛、喉白喉、咽喉部异物、咽后壁脓肿、先天性喉喘鸣等鉴别。
O O O O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis O B-dis I-dis I-dis O B-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis I-dis O O O O