For the past several years from November/December through March/April I have a constant cough. I went to an allergist & she stated it is an allergy cough. She has me taking an over the counter allergy medication, a prescription eye drops & a steroid nose inhaler. She has checked me for asthma which I don't have. I do have a post-nasal drip. Unfortunately it still persists. At this point she says there is nothing more she can due for me. The constant coughing is ridiculous. Can you offer any suggestions or a different type of doctor who might be able to help?.