GP put me on Lisinopril for high blood pressure just before holidays because HCTZ wasn't making much of a difference. Middle of February and I'm back complaining of non productive coughing keeping me up half the night.. GP checked my lungs and I casual mention deviated septum and problem breathing through one nostril. End if discussion. See an ENT who couldn't find a thing. Told me to forget about septum because it wasn't a problem. Still coughing a week later and called for another appointment with GP. GP was away on extended something somewhere and go in to see another GP in the clinic. New GP has a medical student from Nebraska Medical Center with him. Dr. asks what meds I am taking and no sooner get Lisinopril out of my mouth and medical students chimes in "Lisinopril." Seems ACE inhibitors cause coughing in some individuals. GP put me on another BP med and said coughing could last for months.Still coughing. A GP who has been in practice for forty years refers me to a specialist and a fourth year medical student has diagnosis in thirty seconds.