What could lead to an asymmetric sore throat?

Reviewed by Yoshinori Abe, MD

Internal Medicine

An asymmetric sore throat—pain that's worse on one side of the throat—is often caused by infections such as tonsillitis, peritonsillar abscess, or swollen lymph nodes. Less commonly, it may result from acid reflux, canker sores, dental issues, or a lodged object. Because one-sided throat pain can range from minor irritation to a condition requiring urgent care, identifying the cause early matters.

Since symptoms overlap across many conditions, guessing can delay proper treatment. A free, instant, online symptom check can help you understand what may be causing your one-sided sore throat and guide your next steps—whether that's home care, seeing a doctor, or seeking immediate attention.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Learn causes of asymmetric sore throat Find if your sore throat needs care Discover what may be causing throat asymmetry See OTC relief for sore throat pain Find a throat specialist near you Learn safe home remedies for sore throat Check if one-sided throat pain is serious

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Explanation

An asymmetric sore throat means that one side of your throat hurts more than the other. This can happen for a few reasons:

Infections: Sometimes, infections like tonsillitis can make one tonsil bigger and more painful than the other. This was seen in a case of a 10-year-old boy who had tonsillar asymmetry due to an infection.
Asymptomatic Tonsil Asymmetry: Some people might have one tonsil that is naturally bigger without any pain or infection. This is called asymptomatic tonsil asymmetry, and it doesn't always mean there's a problem.
Other Conditions: There are also other rare conditions, like disseminated nocardiosis, that can cause one side of the throat to be more affected than the other, although these are less common.

If you have an asymmetric sore throat, you can use this free AI symptom checker to help identify possible causes and determine whether you should consult with a healthcare provider for proper diagnosis and treatment.

(References)

Cole SS, & Wessler JM. (2020). Sore Throat and Tonsillar Asymmetry in a 10-year-old Boy. Pediatrics in review, 33004580.
Schmid A, Ahmad N, Haubitz S, & Speth MM. (2024). Disseminated nocardiosis presenting as a superinfected .... BMJ case reports, 38890116.
Cinar F. (2004). Significance of asymptomatic tonsil asymmetry. Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery, 15243564.

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