咳嗽及手指血管瘤问题？

请专家帮忙解答如下问题: 1、现年34岁,没有感冒间歇性干咳嗽没有痰,不管白天还是黑夜喉氧就会咳,约有半年时间了，照过CT证实肺部没有问题，请问会是什么原因？ 2、左手食指中截关节表皮突起,轻轻按

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