A member asked:

I, very suddenly and spontaneously, had a huge, blood filled blister appear on my inside cheek.within minutes a second smaller one appeared and the larger one ruptured filling my mouth with blood. what on earth was this?! it appeared so quickly?

A doctor has provided 1 answer
Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

Common causes of oral blood blisters: accidental biting or scalding of the lip or cheek, stress, allergic reaction, angina bullosa hemorrhagica, denture fitting issues, braces on the teeth. In your case, STRESS, ALLERGY & ANGINA BULLOSA HEMORRHAGICA are top of the list. Pain (angina) is common in the last condition, not with stress or allergy. Do you take new medication or have severe stress?

Answered 4/6/2022

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