Hi Cordovian,
My husband has the chronic cough too and I have asked several doc's about it with NO clear answer, they have checked his lungs and can't find anything so I wish I could help you more but it just seems to be part of the disease . Sometimes he coughs so hard that he chokes and it keeps him awake quite a bit, I bought a vaporizer and that didn't help either, maybe someone else has a good answer,
Judith