RT @WebMD: Canker sores and cold sores can crop up when you get stressed -- here's what you can do about it: https://t.co/yuM3xqDSfB https://t.co/IKd2ul5ezn

RT @WebMD: Canker sores and cold sores can crop up when you get stressed -- here's what you can do about it: https://t.co/yuM3xqDSfB https://t.co/IKd2ul5ezn (http://twitter.com/muhamadiqbaldar/status/940772202097471488)