How can i do with a persistent cough?

Find why: Causes range from cough-variant asthma to being on medications (famous ace inhibitors) to GI reflux when you're asleep. Don't ignore it.

First find cause: Chronic cough has many causes, allergies environmental, pollen, dust, mold. Medications, like ace inhibitors, . Infections, and finally underlying lung disease or reflux esophagitis. First the cause should be identified , so accordingly the treatment. To begin with see a doctor, be listened and examined . Get a chest x ray.