Children's Hospital Colorado
Ear, Nose and Throat

Tonsillitis

We treat kids like they should be treated: like kids. That’s why we designed our hospital just for them.

U.S. News & World Report honor roll badge

Get Care

Would you like to learn more about us?
checked box icon Ear, Nose and Throat
Do you have questions about your child’s condition?
Call

What is tonsillitis?

Tonsillitis is the name for infected, swollen tonsils. The tonsils are the two pads of tissue located in the back of the throat. Different forms of tonsilitis can include pharyngitis and strep throat. Tonsillitis is an infection that involves only the tonsils. When the infection also involves a sore throat, it’s called pharyngitis, and when the infection is caused by streptococcal bacteria, it’s commonly known as step throat.

What causes tonsillitis?

Tonsillitis can be caused by viral infections such as colds or flu. A bacterial infection can also cause tonsillitis and pharyngitis. Group A streptococcus is a bacterial infection that inflames the tonsils and causes strep throat.

Who gets tonsillitis?

Tonsillitis is most common in children between the ages of 2 and 15.

Next steps

Get to know our pediatric experts.

Emily Gale, PA-C

Emily Gale, PA-C

Physician Assistant

Gregory Allen, MD

Gregory Allen, MD

Otolaryngology, Pediatric Otolaryngology

Stephen Newton, MD

Stephen Newton, MD

Otolaryngology

Patricia Yoon, MD

Patricia Yoon, MD

Otolaryngology, Pediatric Otolaryngology