I have developed a chronic cough since beginning chemo. I cough so violently, my head and teeth ache afterward. The oncologist suggested congestive heart failure, but an echocardiogram proved that wrong. My primary thought it was silent reflux and prescribed medication, but it was ineffective, too. No one has an answer. X-rays don't shed a clue. WBC isn't elevated, so infection has been ruled out. Has anyone here experienced a chronic cough that won't go away? Any suggetions?