common causes of cough include nasal allergy with post-nasal drip acid reflux and asthma. do you have nasal congestion sneezing and drip? i agree that a trial of antihistamines is helpful. you can consider adding on a sinus rinse and talk to your doctor about a nasal steroid spray to help decrease the drainage. do you experience any heartburn symptoms? do you feel short of breath? i would let your doctor know if you have persistant cough as additional therapies or investigations may be warranted.
i have had a chronic cough for several months. i’m taking an otc antihistamine but it's not working. what next?