October-November Cough: Is It Allergy, Infection, or Pollution?

As October turns into November, a persistent cough, scratchy throat, or blocked nose becomes common in many parts of India, particularly Delhi-NCR. Changing temperatures, lingering post-monsoon dampness, seasonal allergens, respiratory infections, and deteriorating air quality can all contribute to these symptoms.

But how can you tell whether your persistent cough is caused by an allergy, an infection, or air pollution?
"Although these conditions can produce similar symptoms, certain clues may help you identify the likely cause and decide when to seek medical advice," shares Dr Deepak Prajapat, Pulmonologist at Metro Heart Institute, Noida.

Allergy vs Infection vs Pollution-Related Cough

Here is a simple comparison table for your easy understanding.

Allergy-Related Cough: Look For Itching And Repeated Sneezing

According to a report published in the journal ‘Laryngoscope Investigative Otolaryngology’, seasonal allergies can flare up during September, October, and November. In northern India, pollen levels during these months may trigger symptoms in sensitive people. Dust mites and mould that grow in damp indoor spaces can also contribute to respiratory allergies.

An allergy-related cough often occurs alongside:

• Repeated sneezing
• An itchy nose, throat or eyes
• A watery or runny nose
• Clear nasal discharge
• A tickly cough, particularly when mucus drips down the back of the throat

Unlike an infection, an allergy usually does not cause fever or body aches. Symptoms may persist for days or weeks and return after exposure to a particular trigger.

What Can Help?

Reduce exposure to known allergens, clean dusty surfaces, address dampness and mould, and keep windows closed when outdoor pollen or pollution levels are high. Saline nasal rinses and suitable allergy medicines may help, but check with a doctor or pharmacist before using medication, especially for children or people with existing health conditions.

Infection-Related Cough: Watch For Fever And Body Aches

Respiratory infections caused by viruses, including those responsible for the common cold, influenza, and COVID-19, can circulate during seasonal transitions. Cooler weather itself does not cause an infection, but changing routines, indoor gatherings, and exposure to infected people can increase opportunities for viruses to spread.

According to a study published in the journal 'Clinical Microbiology and Infection', an infection-related cough may be accompanied by:

• A sore throat and runny or blocked nose
• Fever or chills
• Headache and body aches
• Tiredness or weakness
• Mucus or phlegm

A common cold generally develops gradually, while influenza often begins suddenly with fever, marked body aches, and significant tiredness. However, symptoms overlap, so they cannot always identify the virus responsible.

What can help?

Rest, drink enough fluids, and avoid close contact with others while unwell. Warm drinks may soothe an irritated throat. Antibiotics do not treat viral infections and should only be taken when prescribed for an appropriate reason. People at higher risk of complications should seek medical advice early if flu is suspected, as antiviral treatment may be time-sensitive.

Also Read: Is the Toxic Air Making You Dull And Depressed? Expert Decodes Link

Pollution-Related Cough: Notice When Symptoms Worsen Outdoors

Air pollution is another important reason for coughing during October and November, especially in northern Indian cities. Smoke, dust, and fine particulate matter can irritate the airways. In Delhi-NCR, changing weather conditions and sources such as vehicle emissions, construction dust, and crop-residue burning can contribute to poor air quality.

Pollution-related symptoms may include:

• A dry, irritating cough
• A scratchy or burning throat
• Burning or watery eyes
• Chest tightness or wheezing
• Breathlessness, particularly during exertion

Symptoms may worsen during outdoor travel, exercise near busy roads, or periods of poor air quality. Some people also notice that their cough increases at night. Pollution can aggravate asthma and other existing lung conditions, and it may worsen symptoms even when there is no infection.

What can help?

Check the local Air Quality Index (AQI) before spending long periods outdoors. When pollution is high, reduce strenuous outdoor activity and consider a well-fitting N95 mask if you must go outside. Keep indoor air as clean as possible and avoid smoking, incense, and other sources of indoor smoke. People with asthma should follow their prescribed treatment plan.

Can There Be More Than One Cause for Cough?

Yes. A person may have an allergy and develop a viral infection at the same time. Pollution can also irritate airways already inflamed by an infection or worsen an allergy-related cough.

Therefore, symptoms alone cannot always establish the cause.

Pay attention to when the cough started, whether you have a fever, whether your eyes or nose itch, and whether symptoms worsen after outdoor exposure. These details can help a doctor assess the likely cause. Depending on your symptoms, examination or tests may be needed.

Also Read: October-November Fever: Which Seasonal Infections Should You Actually Watch For?

When To See a Doctor?

Do not assume that every seasonal cough is harmless. Seek medical advice if your cough lasts longer than three weeks, keeps returning, becomes worse, or is accompanied by persistent fever, unexplained weight loss, or wheezing.

Seek urgent medical care if you have difficulty breathing, severe chest pain, blue or grey lips, confusion, or cough up blood. People with asthma, chronic lung disease, weakened immunity, and older adults should be particularly cautious about worsening respiratory symptoms.

Final Word

An itchy nose and repeated sneezing may point towards an allergy; fever and body aches may suggest an infection; and a dry, irritating cough that worsens when air quality deteriorates may indicate pollution-related irritation. However, these patterns are clues, not a diagnosis. If your cough persists or affects your breathing, consult a doctor rather than relying on home remedies alone.