Why do people get sore throats?

Viral infections:

- Most sore throats (around 90%) are caused by viruses, such as the common cold virus.

Bacterial infections:

- A small number of sore throats (around 10%) are caused by bacteria, such as the bacteria that causes strep throat. Strep throat is more common in children than adults.

Irritants:

- Sore throats can also be caused by irritants, such as smoke, dust, or pollution.

- Allergies to things like pollen or pet dander can also cause a sore throat.

- Dry air can further irritate the throat and cause soreness.

Other causes:

- Sometimes, a sore throat can be a symptom of a more serious medical condition, such as mononucleosis (a viral infection that causes fever, sore throat, fatigue, and swollen lymph nodes) or tonsillitis (inflammation of the tonsils).