mikedreamer
there is one other thought. There are nerves in the chest that can trigger a cough. Is anything heavier than a regular shirt touching your chest. There is a nerve there called the vegus nerve (sp?) I think it has to do with that...maybe the shoulder harness?
Again, all that booze may have sort of RE SET YOUR nervous system to a lower threshold. You may want to see a neurologist and have the nerves tested (it is like a circuit tester)
Also, have you tried vicks vaporub on your chest?
There are incidents of hiccups that are uncontrollable and I have a feeling it is related to your cough.
Uncontrollable Coughing Fits in Adults and Children | Healthhype.com
I have a feeling that if you get to the USA you might try one of our specialists, and please rule out COPD.
sincere good luck