Chronic cough is usually seen in cases of asthma, GERD or gastro esophageal reflux disease and sinusitis due to
the post nasal drip. You should also talk to
your doctor about whether this could be a bacterial infection, viral infection or tuberculosis.
You should try steam inhalation, warm saline gargles, saline nasal drops and oral antihistamine medications and see if it helps with your symptoms. If you have symptoms of reflux, you should try some antireflux, antinausea medications.