Canker vs Cold Sore: Difference and Comparison

In today’s world, lots of infections are spreading from one person to another people. It will mostly affect our mouths. We, humans, use our mouths to eat and enjoy the taste of food.

Once our throat gets affected, it will be difficult to eat and taste the food. Canker sore and Cold Sore come under sore types, but they will affect in different ways, and it will happen in some other way. 

Key Takeaways

  1. Canker sores are non-contagious mouth ulcers, while cold sores are contagious, fluid-filled blisters caused by the herpes virus.
  2. Canker sores appear on the soft tissues inside the mouth, while cold sores develop on or around the lips.
  3. Cold sores often recur due to the herpes virus, while canker sores can be triggered by stress, injury, or dietary factors.

Canker vs Cold Sore

Canker sores are not contagious, while cold sores are contagious. Canker sores develop only inside the mouth, while cold sores develop inside the mouth and outside the mouth (on or around your lips). Canker goes away within a week or so, while Cold Sores last longer than a week.

Canker vs Cold Sore

A canker sore is a disease that will happen inside your throat. You can avoid this by taking your breakfast at the proper time.


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Once you get a feeling that you are going to get a canker sore, then visit a doctor immediately. It would be easy for the doctors to cure it in the first stage.

It is normal for people to get canker sores because of their different food habits. 

A cold sore is an infection that will affect your nose and mouth. Once you get a cold, there is no immediate cure available for it. It will go on its own.

But you can visit a doctor or follow some home remedies to avoid the pain that it causes in your nose and mouth. You should also prevent it from spreading from you to others. 

Comparison Table

Parameters of ComparisonCanker SoreCold Sore
Affected areaInside your mouthInside your mouth and throat
ReasonNot following the proper food habitsBecause of seasonal changes
DurationEarly-stage might take 3 daysIt will go on its own
MedicineNo particular medicineNo medicine as of now

What is Canker Sore?

A Canker sore is a type of ulcer that will appear inside your mouth. This type of ulcer will make your entire throat weak. But it won’t spread from you to other people.

Since this is an ulcer that happens when you fail to take care of your food in the morning, skipping your morning breakfast will lead to this type of sore throat.

Once you get this canker sore, it will be very difficult for you to eat solid food.

Because your mouth will become too tired to chew the food you eat. It would be good if you noticed it for the first time.

If you try to ignore this, then it will develop in your entire mouth, which will lead to further complications in the future.

Once this starts spreading in your mouth, you will be able to eat liquid foods only. When you try to eat solid foods with lots of spice, you will find a burning sensation in your mouth.

It is better to visit a doctor the moment you feel a sore throat.

It will look yellow in color. You can ask any one of your family members to examine your throat so that they can use a torchlight to examine it.

If the canker sore is very worse, then it will take more than 10 days to get cured. 

What is Cold Sore?

A cold sore will come depending on the seasons. Some people are very much attacked by the cold when they experience a small amount of rain.

You can sometimes catch a cold sore if you travel too much in the hot sun, cold winds, and from some other people who are already having a cold.

If you think you are going to have a cold sore, you can follow some simple home remedies to stop it from spreading further.

To escape from a cold sore, follow all the safety precautions like drinking hot water in the cold season, taking an umbrella when you go out somewhere during rainy seasons, and not stepping unnecessarily in the winter season.

These are some steps followed by people to prevent cold sores. In some countries, people will even wear masks during the winter season to prevent the infection from spreading. 

If you get a cold sore, your nose and mouth areas will be affected. You will find difficulty in eating as the food taste will be different for you.

If you have cold sores, then always sneeze using your hands and carry a handkerchief whenever you go. It can easily spread in the air.

It would be recommended to take all the safety measures to prevent its spreading.

Main Differences Between Canker and Cold Sore

  1. Canker sore will happen inside your mouth, and it will mainly affect your throat area. On the other hand, a cold sore will happen inside your mouth and nose.
  2. If you get a canker sore in the early stage, then it will take 3 days to get cured. But a cold sore will take some time and will go on its own.
  3. In a canker sore, you will feel a burning sensation in your throat. On the other hand, you will feel pain in your nose and mouth.
  4. A canker sore cannot be spread from one human to another human. A cold sore can be easily spread from one human to another human.
  5. Canker sore will happen if you fail to eat your morning breakfast. The cold sore will happen because of monsoon changes.
Difference Between Canker and Cold Sore

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