A 47-year-old member asked:
is there a difference between a blister/cold sore and a canker sore?
2 doctor answers • 7 doctors weighed in
Allergy and Immunology 44 years experience
Cold sore is herpes: Cold sores or fever blisters are caused by herpes simplex type i (hsv 1).
ENT and Head and Neck Surgery 29 years experience
Cold vs Canker sore: A cold sore or fever blister typically occurs outside the mouth; around the lips, chin and just under the nose, and are caused by herpes simplex virus type 1. In the event that a cold sore occurs in the mouth, you'll see it on the gum or soft palate.
Canker sores typically erupt inside the mouth; on the tongue, inner lip and lining of cheeks. Exact cause is unknown.
A 38-year-old member asked:
How do a blister/cold sore and a canker sore differ?
2 doctor answers • 2 doctors weighed in
Dermatology 43 years experience
UUsually: Usually caused by herpes for cold sore and canker sore is usually autoimmune. Please see your dermatologist for evaluation and to discuss treatment options.
Last updated Jan 1, 2021
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