Generally speaking, coughing is perfectly normal. A cough can help to keep your throat clear from phlegm and other irritants. However, sustained coughing can also be symptomatic of a number of conditions.
Irritants are substances in the air that irritate your throat or nasal passages and can cause coughing. A cough is your body’s way of rejecting that irritant. Sometimes the irritant comes in the form of an allergen, such as pollen or pet dander. This causes your body’s immune system to create chemicals called histamines that react to the allergen. If you have a cough that arises immediately in a certain environment or season, you may have an allergy.
Another cause for a cough is a viral or bacterial infection. These symptoms may be accompanied by:
- nasal congestion
- stomach upset
- runny nose