Cold Sore & Canker Sore, What’s the Difference?

Cold Sores and Canker Sores – Know the Difference

Canker sores and cold sores share many similarities. Both infections appear in similar areas, have likewise triggers (learn more about what can trigger a cold sore), such as stress, cuts, hormonal changes, and can be very painful. However, in order to receive the proper treatment, it is important to be able to tell the difference between the two.

Canker Sores


Canker sores are caused by a number of different factors, including a lack of proper nutrition, mainly vitamin deficiency, times of high stress or a facial injury, and lapses in the immune system. Canker sores can happen to anyone, but people around the age of 10-20 are the most susceptible.


Usually found inside the mouth, on gums or on the back of lips.


Canker sores are usually open sores, with white, yellow or grey centers and a bright red border. Found in singles or in clusters.

Can I Contract Canker Sores?

No, you cannot contract canker sores from someone.


There are many home remedies for getting rid of canker sores, including coconut oil, honey rubs, or even warm salt water, all of which are good anti-septic and anti-inflammatory treatments. This website has more resources for at-home canker sore treatments.


Cold Sore / Fever Blister


Cold sores are member of the HSV, or Herpes Simplex Virus. Outbreaks are triggered by stress, lack of sleep, cuts, or exposure to hot or cold temperatures. Read our What is a Cold Sore article to learn more.


Either on or outside the lips, almost always found outside the mouth. This is one of the key differences between cold sores and canker sores.


Red, inflamed, fluid-filled blisters, typically found in groups.

Con I Contract Cold Sores?

Yes, cold sores are very infectious. Skin-to-skin contact with an individual with cold sores can spread the virus.


The only real treatment for cold sores is InterceptCS! Using advanced thermal therapy technology, Intercept cold sore treatment eliminates them fast. Get rid of your cold sores or fever blisters in less than 2 minutes, at home, without a prescription. Find out more about amazing InterceptCS today!

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