#asktheexpert my son has cough from last 2 months. he is 11 months old. He took a lot of medicine but all in vain. we have done many tests like x-ray, Ecg .They are all normal. He sneezes a lot, has no fever and no whistling sound comes from the chest, only cough. what should I do?

A. I'm sorry to hear that your 11-month-old has been struggling with a persistent cough and sneezing for the past two months. Since the tests like the x-ray and ECG came back normal, it's possible that the cough could be due to other factors like: Post-Nasal Drip: Sometimes, even after a cold, mucus can continue to drip from the nose into the throat, causing irritation and coughing, especially at night. Allergies: Your baby could be allergic to something in the environment, such as dust, pet dander, or pollen, which can trigger sneezing and a cough. Allergies can sometimes be difficult to diagnose in babies, but they can lead to persistent symptoms. Asthma: While rare in infants, asthma can cause persistent coughing, wheezing, and sneezing. It might require further evaluation by a pediatrician or an allergy specialist. Viral Infections: Some viral infections can cause lingering symptoms even after the primary infection is over. It’s also possible that a secondary infection or a different virus could be contributing to the symptoms. Environmental Factors: Dry air, smoke, or strong odors can also irritate your baby’s airways, causing them to cough or sneeze. Since the condition has been ongoing for such a long time, it’s important to follow up with your pediatrician to explore other possible causes. They may recommend an allergy test, further evaluation for asthma, or a specialist referral to determine the underlying cause of the persistent cough and sneezing.