Coughs tend to fall into one of two categories, either dry or chesty. Someone suffering from a chesty cough will expel phlegm and mucus when coughing.
Coughing is simply a natural reflex which keeps our throat and airways clear of blockages.
Therefore a cough normally indicates an inflammation in the respiratory passages which may be the result of an infection like cold or flu. In the case of chesty coughs, it is normally mucus or phlegm on the chest that is coughed up through the duration of the symptoms.
Most coughs are described as acute, meaning that they appear suddenly and normally do not last longer than 2-3 weeks.
They are often due to a cold, flu or sinus infection that in turn causes a build-up of phlegm or mucus on the chest. Smoking cigarettes, allergies and asthma are also common causes of coughs.
In some cases a cough can be a symptom of a more serious condition. These could include:
- Lung infections like pneumonia or acute bronchitis (may start suddenly but then linger on).
- Chronic obstructive pulmonary disease (emphysema or chronic bronchitis).
- Sinusitis.