A Cough That Won’t Go Away: When to See a Doctor

A cough can linger after a cold, even when the blocked nose, sore throat and fever have settled. Many coughs improve over a few weeks, but one that keeps returning, interrupts sleep or becomes worse deserves attention.

There are several possible reasons for a persistent cough. An infection, asthma, irritation from smoke, acid reflux or even a medicine can be involved. Finding the cause helps your doctor choose treatment that addresses the problem.

In India, a cough lasting two weeks or more should be assessed by a doctor, including consideration of tuberculosis, commonly called TB. This does not mean every persistent cough is TB, but it is an important condition to check for.

Tell your doctor if you also have fever, night sweats, unexplained weight loss or close contact with someone who has lung TB. These details help guide testing. If symptoms are worsening or you feel unwell, seek care sooner rather than waiting for two weeks to pass.

After a respiratory infection, a cough may remain even when other symptoms have gone. Mucus dripping from the nose into the throat can also trigger coughing, particularly when allergies or sinus problems are present.

Asthma is another possibility. Some people mainly experience a cough rather than obvious wheezing. A cough that repeatedly follows certain exposures or activities is worth describing to your doctor, although its pattern alone cannot confirm the cause.

Acid reflux can contribute too. This happens when stomach contents travel back into the food pipe and may cause throat irritation, hoarseness or coughing. Some people have heartburn or a sour taste, while others have a persistent cough without these typical symptoms.

Smoking and long-term exposure to dust or fumes can also be involved. An ongoing cough with mucus and increasing breathlessness may need assessment for COPD or another lung condition, particularly when everyday activities are becoming harder.

Some medicines called ACE inhibitors, prescribed for blood pressure or heart conditions, can cause a persistent dry cough. Ramipril is one example. Bring a list of your medicines and tell your doctor when the cough began.

Do not stop a prescribed medicine on your own because you suspect it is responsible. Your doctor can review whether a change is appropriate. Cough syrup usually does little to help a cough caused by ramipril.

Your doctor will ask when the cough started, whether it is dry or brings up mucus, and whether you have fever, breathlessness or other symptoms. Mention smoking, workplace exposures, recent illnesses and any treatments you have already tried.

After examining you, the doctor may recommend a chest X-ray, a mucus sample, allergy testing or a breathing test such as spirometry. The tests depend on your symptoms and examination; everyone does not need every investigation.

If TB is suspected, testing may include a sputum sample for a molecular test that looks for TB bacteria. Getting the appropriate tests is more useful than repeatedly trying different cough medicines without knowing the cause.

Antibiotics are not routinely needed for coughs caused by viral infections. They do not treat viruses and can cause side effects. Your doctor will decide whether there is a bacterial infection or another reason to prescribe them.

Cough medicines may offer temporary relief, but they do not necessarily treat the underlying illness. Ask your doctor before giving cough and cold medicines to a child, as some products are unsuitable for younger children.

While recovering, rest and small sips of warm water may help soothe your throat. Honey may ease coughing for some people, but never give honey to a baby under one year old. Avoid smoking, cover coughs with a tissue or your elbow, and wash your hands regularly.

Seek prompt medical advice if the cough is rapidly worsening, you develop breathlessness or chest pain, or you feel too unwell to manage normal activities. Seek advice earlier if you have diabetes, an existing heart or lung condition, or a weakened immune system.

Even small streaks of blood in mucus need urgent assessment. Coughing up more than a few spots of blood, or blood together with breathing difficulty or chest pain, requires emergency care.

Call 112 in India if someone is struggling to breathe, cannot speak because of breathlessness, develops blue or grey lips, or becomes suddenly confused. Do not drive yourself to hospital when severely unwell.