Checking your tonsils at home takes about 30 seconds with a mirror and a light source. Your tonsils sit on either side of the back of your throat, flanking the small tissue that hangs down in the middle (the uvula). With the right positioning, you can get a clear enough view to spot signs of infection, swelling, or tonsil stones.
How to See Your Tonsils
Start by rinsing your mouth with water to clear away any food particles. Then stand in front of a mirror in a well-lit room. If the lighting isn’t great, use a flashlight or your phone’s light. Hold the light so it shines toward the back of your throat without blocking your view.
Open your mouth wide and push your tongue flat against the bottom of your mouth, or stick it straight out. This is the key step most people skip. Your tongue naturally sits high enough to block the view, so flattening it makes a big difference. Saying “aaaahh” helps because it lifts the soft palate and pulls the tongue down at the same time.
Look past the uvula to either side. Your tonsils are the rounded, slightly bumpy tissue sitting in the space between two folds of tissue (called the tonsillar pillars). Some people have large, easily visible tonsils. Others have small ones tucked into the folds, which can be harder to spot. If you’ve had your tonsils removed, you won’t see anything there at all.
What Healthy Tonsils Look Like
Healthy tonsils are pink, roughly the same size on both sides, and blend in with the surrounding tissue. They may have a slightly bumpy or ridged surface, which is normal. Those bumps and crevices (called crypts) are part of their structure. Tonsil size varies widely from person to person. Some people naturally have large tonsils that have never caused a problem, while others have small ones that are barely visible.
Doctors grade tonsil size on a 0 to 4 scale based on how much of the airway they take up. Grade 0 means the tonsils are tucked into their pockets and barely visible. Grade 1 means they take up 25% or less of the space between them. Grade 4 means the tonsils occupy more than 75% of that space, nearly touching or actually touching in the middle. You don’t need to grade your own tonsils precisely, but this gives you a sense of what’s considered small versus large.
Signs of Infection
Infected tonsils look noticeably different from healthy ones. The most obvious change is color: inflamed tonsils turn red and appear swollen, sometimes dramatically larger than usual. They may also have a whitish, yellowish, or gray coating, or you might see distinct white patches or streaks of pus on the surface. Swallowing typically hurts, and the soreness can come on quickly.
The appearance alone can’t tell you whether the infection is viral or bacterial, but a few clues help. Strep throat tends to cause a sore throat that starts suddenly, along with red, swollen tonsils with white patches and a fever above 101°F. If you also have a cough, runny nose, hoarseness, or pink eye, a virus is the more likely cause. Strep throat rarely comes with those symptoms.
Spotting Tonsil Stones
Tonsil stones are small, hardened lumps that form in the crevices of your tonsils. They look like tiny white or yellow pebbles, sometimes barely visible, sometimes large enough to feel with your tongue. They develop when debris like dead cells, mucus, and bacteria gets trapped in the tonsil crypts and gradually calcifies. People who’ve had repeated tonsil infections tend to have deeper crypts, which makes stones more likely.
You might notice tonsil stones visually during a self-check, or you might notice symptoms first: persistent bad breath that doesn’t improve with brushing, a feeling of something stuck in the back of your throat, or mild irritation on one side. Small stones often dislodge on their own when you cough or swallow. Larger ones can sometimes be gently coaxed out with a cotton swab or water flosser, though pressing too hard on tonsil tissue can cause irritation or bleeding.
Checking for Asymmetry
One of the most useful things you can do during a self-check is compare your two tonsils to each other. Mild asymmetry is common and usually harmless. But if one tonsil is significantly larger than the other, especially if the swelling is new or getting worse, that’s worth noting. Severe one-sided swelling with intense pain, difficulty opening your mouth, or a muffled voice can signal a peritonsillar abscess (sometimes called a quinsy), which is a pocket of pus forming next to the tonsil. That needs prompt medical attention.
Warning Signs to Take Seriously
Most sore throats and mild tonsil swelling resolve on their own within a week. But certain symptoms mean something more serious is happening:
- Difficulty breathing or voice changes, which can indicate significant swelling near the airway
- Trouble swallowing saliva, not just food, suggesting severe swelling or abscess
- Difficulty opening your mouth, a classic sign of a peritonsillar abscess
- Severe pain concentrated on one side of the throat
- A persistent high fever that doesn’t respond to over-the-counter treatment
When Recurring Infections Add Up
If you’re checking your tonsils because they seem to get infected constantly, it helps to know the threshold doctors use when considering removal. The standard criteria call for at least 7 episodes in a single year, 5 or more per year for two consecutive years, or 3 or more per year for three consecutive years. Each episode should involve a sore throat plus at least one of the following: a fever above 101°F, swollen and tender neck lymph nodes, visible pus on the tonsils, or a positive strep test.
Keeping a simple log of your infections (date, symptoms, whether you had a fever, any test results) gives your doctor exactly the documentation they need to make a recommendation. Without that record, it’s easy to lose track of how many episodes you’ve actually had.