hello doctors i have a 9 year old brother, hes been coughing and sneezing and a stuffed up nose. when he is coughing it sounds like an old man coughing, with chest pain.  And is nose is always stuffed up and he keeps sniffing it up. i believe that it mite be an infection but i'm not sure please help me because i believe that a 9 year old kid should not be coughing like they way he is and at the same time have a stuffed...

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