Having a sore throat is pretty common; every now and then, they are accompanied with other painful signs too. It is possible to have a swollen throat without any other complicated symptom; which may be due to a canker sore on the tonsil present at the back of your throat.

Minor canker sores are very common and found in places inside the mouth like lips, palate, tongue, and tonsils. They appear as white center filled oval or round shaped sore. A good thing about this issue is that you don’t necessarily need to visit a dentist to get rid of a canker sore on the tonsil. However, you might need assistance to deal with the pain and discomfort that is brought along with.

This blog is a perfect read if you are looking for answers about canker sores and their appearance on tonsils. Go through to find out the causes and ways to deal with canker sores at home without assistance.

Reasons for the Development of Canker Sore on Tonsil

The exact reason for canker sore growth on the tonsils or any other place is not known, however, there are some conditions linked to it. Injuries of the mouth like accidental biting of the lip or cheek, anxiety, vitamin B-12 deficiency, or hormonal changes; all can contribute towards the growth.

Additionally, certain foods or drinks that you consume daily causes canker sore to grow on the tonsil. Foods in high acidic quantity; or common allergen containing foods come under this category. When you swallow these trigger containing foods, they touch the tonsils and result in canker sores.

You might not easily distinguish between a sore throat; or another condition, strep throat with tonsil having a canker sore. One way to know is to check the rear side of the mouth while standing in front of a mirror and observe the tonsils. If you see large white circles with red edges on either tonsil, it is a canker sore. On the other hand, if there are only big white bumps and slight inflammation on both sides of the tonsils, it is a disease.

How to Treat Canker Sore on Tonsil?

The discomfort caused due to a canker sore on a tonsil is easily treatable through home remedies like rinsing the mouth with salt water 3 times a day. It works well as an antibacterial and lowers inflammation too.

Moreover, baking soda and water solution is good for getting rid of sores and pain. With these remedies, pain medications available OTC like ibuprofen is a good way to alleviate pain. Steer clear of acidic foods and try eating soft foods like yogurt or smoothies; if they are cold, that is a plus for pain relief.

How Long Does Canker Sore Last on a Tonsil?

A small sore on the tonsil will last for about 2 to 3 days; after that, it will start to reduce naturally. However, it will take at least 7 to 10 days for it to heal completely. In the case of larger ones, expect it to take at least 4 weeks to start healing. Unfortunately, the sore leaves a spot behind after healing completely.
Some alarming signs that need attention include:

  • A canker sore staying for more than 15 days
  • High fever
  • If the sore is creeping its way to the lips
  • Large size and growing ulcer


Usually, the canker sores go away naturally, but the recovery time depends on the extent of the lesion. If you feel that it is still not going anywhere after 10 to 15 days, get it checked by your dentist immediately. For further questions, contact Smile Time Dental at 2812450711

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