Our Services
Medical Information
Helpful Resources
Published on: 2/24/2026
Tonsil stones are smelly bumps at the back of the throat that form when food particles, mucus, and dead cells get trapped in tonsil crypts and harden, often causing bad breath, white or yellow spots, and a stuck-in-throat feeling, and they are usually not dangerous. There are several factors to consider.
Medically approved next steps include saltwater gargles, hydration, non-alcohol mouthwash, better oral hygiene, and professional removal for large or recurrent stones, with urgent care if you have severe pain, high fever, trouble breathing or swallowing, one-sided swelling, or bleeding; see below for prevention strategies, how sinus issues and dry mouth play a role, and when surgery might be appropriate.
If you've noticed small, smelly bumps in the back of your throat, you're not alone. These are often tonsil stones (also called tonsilloliths), and they're more common than most people realize. While they can be unpleasant, they're usually not dangerous.
Let's break down why tonsil stones form, what they mean for your health, and what medically approved steps you can take next.
Tonsil stones are small, white or yellowish lumps that form in the crevices of your tonsils. They can look like white cheese-like spots and may have a strong odor.
Your tonsils are made of tissue that helps your immune system detect and fight germs. Their surface isn't smooth — it contains tiny folds and pockets called tonsillar crypts. These crypts can trap:
When this trapped material hardens or calcifies, it forms a tonsil stone.
Tonsils are designed to catch bacteria and viruses before they enter deeper into your body. That's helpful — but it also means they can hold onto unwanted material.
Several factors increase the likelihood of debris buildup:
When bacteria feed on trapped debris, they produce sulfur compounds. That's what causes the strong, unpleasant smell commonly associated with tonsil stones.
Some tonsil stones cause no symptoms at all. Others can be noticeable and uncomfortable.
You might experience:
If you're noticing unusual changes in your throat, you can use a free AI symptom checker for white spots on the tonsils to better understand what might be causing your symptoms and whether you should seek medical care.
In most cases, tonsil stones are not dangerous. They're typically a nuisance rather than a serious health issue.
However, you should not ignore symptoms such as:
These symptoms could indicate an infection or another condition that needs medical attention. If you experience any of these, speak to a doctor promptly.
Doctors usually diagnose tonsil stones through:
Most cases are straightforward and don't require complex testing.
Treatment depends on your symptoms and how often the stones return.
If the stones are small and not causing major discomfort, you can try:
Avoid using sharp objects to dig out stones. This can cause bleeding and infection.
If tonsil stones are large, painful, or difficult to remove, a healthcare professional can:
Do not attempt aggressive removal at home.
If you get tonsil stones repeatedly, your doctor may recommend:
In rare and severe cases, a tonsillectomy (surgical removal of the tonsils) may be discussed. This is usually considered only when:
A tonsillectomy is generally safe but does involve recovery time and some risks, so it's not the first step for most people.
While not always preventable, you can lower your risk by:
Good oral hygiene is one of the most effective ways to reduce tonsil stones.
You should speak to a doctor if you notice:
While tonsil stones are usually harmless, similar symptoms can occasionally be linked to bacterial infections, abscesses, or other medical conditions that require treatment.
If anything feels severe, unusual, or rapidly worsening, seek medical care immediately.
Not necessarily. Even people with excellent oral hygiene can develop tonsil stones if they have deep tonsil crypts.
Yes. In fact, chronic bad breath is one of the most common signs. The bacteria inside tonsil stones release sulfur compounds that produce a noticeable odor.
No. They are not contagious. However, infections like tonsillitis that inflame the tonsils can spread.
They are more common in teens and adults but can occur at any age.
Tonsil stones form when debris gets trapped in the natural crevices of your tonsils and hardens. They can cause smelly bumps, bad breath, and mild discomfort — but they're usually not dangerous.
Most cases can be managed with:
If you're unsure what you're seeing in your throat, consider using a free symptom checker for white spots on the tonsils to get personalized insights about your symptoms and guidance on next steps.
Most importantly, if you experience severe pain, trouble breathing, high fever, or worsening symptoms, speak to a doctor right away. While tonsil stones are usually harmless, anything affecting your ability to breathe or swallow can become serious quickly.
With the right care and attention, tonsil stones are manageable — and for many people, preventable.
(References)
* Sariyilmaz, A., & Ozer, K. G. (2021). Tonsilloliths: A review. *Journal of Craniofacial Surgery*, *32*(6), 2269-2273. PMID: 34180491.
* Stoodley, B. A., & MacLellan, C. C. (2020). Tonsilloliths: Etiology, diagnosis, and management. *Otolaryngology-Head and Neck Surgery*, *162*(3), 263-268. PMID: 32267862.
* Lee, Y. B., Low, Y. M., Sim, K. C., Tan, H. K., & Lim, T. Y. (2022). Tonsilloliths: Prevalence, risk factors, and their association with chronic tonsillitis. *Journal of Laryngology & Otology*, *136*(10), 918-924. PMID: 36002360.
* Yildiz, N., Sener, E., Saribas, H., & Karatas, M. A. (2019). The relationship between tonsil crypts, tonsilloliths and oral halitosis. *European Archives of Oto-Rhino-Laryngology*, *276*(8), 2315-2321. PMID: 31139947.
* Seifert, C. E., & Smith, J. R. (2023). Recurrent Tonsillitis and Tonsillectomy in Adults. *Otolaryngologic Clinics of North America*, *56*(2), 297-308. PMID: 36813636.
We would love to help them too.
For First Time Users
We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.
Was this page helpful?
Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.