Well since you asked...here is my "coughing saga".....several months ago I switched blood pressure meds to something less expensive. One side effect was coughing. The warning label said it may cause a "dry cough"....Two weeks after beginning that med, I started coughing up blood, coughing so hard I threw up, etc...and coughing so much through the night my chest hurt. I went to the dr who said I had pneumonia and gave me antibiotics. When I was done w/the antibiotics, the coughing was mostly gone.
Then about a week or so later it slowly started up again. Two months after the beginning of the pneumonia I was so exhausted and was coughing all night and feeling tired and I looked around on the net and found that according to several sites, the bp med not only caused dry cough, but also could cause: coughing up blood, coughing to the point of vomiting, and, ta-da pneumonia!!!!!!!!! My dr didn't bother telling me that. I took myself off of that med, weaned myself off and refilled my old "expensive" bp prescriptions.
Shortly after that, allergy season kicked in here in OH. I was so congested I couldn't breath through my nose and as we were driving to the drugstore, felt like my throat (the only way I could breath!) was closing up. It was really scary. I went to the er and they said it was just an upper respiratory viral infection and gave me some nose drops and an inhaler to get me through the crisis of feeling like I couldn't catch my breath. They said according to the test they did my throat was NOT closing up but most likely just felt like it when I'd have to swallow because my throat was so irritated from coughing so much.
Ever since I am still coughing, not as much as when I was on the bp med zestril, but enough that when I lay down at night it begins and is sporadic through the night. I usually have cough drops (sugarless) by my bedside which help a little when I begin to feel the urge to cough. It feels now like post nasal drip irritating the back of my throat again I'm guessing its an allergy thing related to the season in Ohio.... I've taken otc cough suppresant/expectorant. I can't take stuff for decongesting because of the blood pressure issue. I am not experiencing other "allergic type symptoms" listed on the pkgs of otc allergy meds (like itchy eyes, runny nose, etc...) so I haven't tried those. Maybe I should give that a try.
So...that's prob more than you wanted to know!!!!

Terry