I have developed a persistent cough after I was diagnosed with a lung infection on 16 August 2011(it was the first time ever that I had lung infection, I , 41yrs old). On 23 Auguse the doctor told me because my lungs have been sensitised it has developed to mild ashma enven though my lungs are clear. I work in an emotionaly toxic environment and is daily under huge stress caused by my Director. Can stress at work cause my chronic coughing (which sometimes make me vomit). I look forward to your answer. Kind regards Crystal