Healthy tonsils are pinkish, oval-shaped mounds of tissue sitting on each side of your throat, each roughly the size of a marshmallow. If yours look noticeably redder, larger, or coated in white or yellow patches, they’re likely swollen. The good news is that you can check them yourself at home in under a minute with just a mirror and a light source.
How to Check Your Tonsils at Home
Start by drinking some water or rinsing your mouth 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. Open your mouth as wide as you can and push your tongue flat against the bottom of your mouth, or stick it straight out. Saying “aaaahh” helps flatten the back of the tongue and opens up your view of the throat. Look past your tongue toward the back of your throat, and you should see your tonsils on either side.
If you’ve never really looked at your tonsils before, it helps to know what normal looks like. Healthy tonsils are pink (matching the rest of your mouth), roughly symmetrical, and sit tucked into the sides of your throat without crowding the airway. They have a slightly bumpy surface, which is normal. What you’re looking for are changes from that baseline: color shifts, size increases, or any coating or spots.
What Swollen Tonsils Look Like
Swollen tonsils are usually easy to spot once you know what to compare them to. The most obvious signs include:
- Redness: Instead of their usual pink, inflamed tonsils appear visibly red, sometimes a deep or angry red that stands out from the surrounding tissue.
- Increased size: One or both tonsils look larger than marshmallow-sized, possibly bulging toward the center of your throat. In mild cases they may take up about 25% of the visible airway. In severe cases they can block 75% or more, nearly touching each other in the middle (sometimes called “kissing tonsils”).
- White or yellow patches: A white, yellow, or grayish coating or distinct spots on the tonsil surface is a common sign of infection. These patches can look like small streaks or larger areas of buildup.
- Asymmetry: If one tonsil looks significantly larger than the other, that’s worth noting. Some natural asymmetry is normal, but a dramatic difference, especially with pain on one side, can signal a more localized problem.
Symptoms That Confirm the Swelling
You may not always get a clear visual. Sometimes the swelling is subtle, or your gag reflex makes it hard to get a good look. In those cases, the symptoms you’re feeling can tell you just as much as what you see in the mirror.
A sore throat is the most common companion to swollen tonsils, particularly pain that worsens when you swallow. You might also notice a scratchy or muffled quality to your voice. Swollen lymph nodes along the sides of your neck, which feel like tender lumps just below your jawline, often accompany tonsil inflammation. Bad breath is another telltale sign, especially when there’s a bacterial infection or coating on the tonsils. Some people experience ear pain even though the infection is in the throat, because the throat and ears share nerve pathways. Younger children who can’t describe their symptoms may drool more than usual or refuse to eat because swallowing hurts.
Viral vs. Bacterial: How to Tell the Difference
Most cases of swollen tonsils are caused by viruses, the same ones responsible for the common cold and flu. Viral tonsillitis tends to come with a package of cold-like symptoms: a cough, runny nose, sneezing, and a hoarse voice. The tonsils are red and swollen but often don’t have the heavy white coating.
Bacterial tonsillitis, most commonly from strep, looks a bit different. The tonsils are more likely to have distinct white or yellow patches. You’ll typically have a high fever (over 101°F), swollen and tender lymph nodes in the neck, and a sore throat that came on suddenly rather than building gradually. Notably, a cough is usually absent with strep. That combination of high fever, white patches, swollen neck glands, and no cough is what doctors use as a clinical shorthand to suspect a bacterial cause. A rapid strep test or throat culture confirms it.
This distinction matters because bacterial tonsillitis responds to antibiotics while viral tonsillitis does not. Viral cases resolve on their own, typically within 7 to 10 days.
Signs That Need Urgent Attention
Swollen tonsils are common and usually manageable, but a small number of cases develop into something more serious called a peritonsillar abscess, where a pocket of pus forms near one tonsil. This is the complication you don’t want to miss.
The warning signs are distinct. Difficulty opening your mouth (the jaw feels locked or stiff) is one of the most reliable red flags. A “hot potato” voice, where you sound like you’re trying to talk around something in your mouth, is another. You might notice the small dangling tissue at the back of your throat (the uvula) pushed to one side. Drooling, severe bad breath, and an inability to swallow even liquids point toward the same problem. If you or your child has any trouble breathing, that warrants immediate emergency care.
What Swollen Tonsils Feel Like Day to Day
Mildly swollen tonsils can feel like nothing more than a persistent tickle or slight discomfort when you swallow. You might notice your throat feels “tight” or that food seems harder to get down than usual. Some people first notice the issue because their voice sounds slightly off, or because they’re waking up with a dry mouth from breathing through it at night (enlarged tonsils can partially block airflow during sleep).
Moderately to severely swollen tonsils make their presence more obvious. Swallowing becomes genuinely painful rather than just uncomfortable. Eating solid foods, especially anything rough or acidic, can feel like scraping the back of your throat. You may find yourself tilting your head or swallowing in a specific way to reduce the discomfort. Fever, fatigue, and a general feeling of being unwell often accompany this level of swelling, especially when infection is the cause.
If your tonsils look enlarged but you have no pain, fever, or other symptoms, that may simply be your normal anatomy. Tonsil size varies widely from person to person, and some people naturally have larger tonsils that never cause problems. The key question is whether your tonsils have changed, and whether the change came with other symptoms. Redness, coating, pain, and fever together paint a clear picture. Size alone, without those other signs, is less meaningful.