Why isn't my cough improving after 4-6 months? I've tried different doctors, but the dry cough keeps returning.
A cough lasting 4-6 months often comes from untreated allergies, acid reflux, asthma, or post-nasal drip, not infection. If it keeps returning, you may need a chest X-ray, spirometry, or reflux treatment to find the exact cause and treat it properly.