Hello SAL
Mouth cancer ulcers do not migrate, so it is probably a viral infection. The most common cause for blood blisters is oral herpes, a viral infection that flares up periodically and has no known cure. You can usually recognise it as oral herpes signals its arrival with tingling or discomfort (a prodome) where a blister is about to appear. Soon afterward, blisters erupt on the tongue, the gums, or the cheeks.
Herpes sores can start out as small blisters that soon run together to form one painful, large sore. Flare-ups can be triggered by stress, food allergies, dental treatment, mouth injury, or sunburn on the lips. Taking vitamin C during the prodome may help clear up ensuing sores faster. And taking herpes medication like Zovirax (acyclovir) or Famivir (Famciclovir) will inhibit the reproduction of the virus that causes the blood blisters in the first place. You can also try
Penciclovir. The herpes lesions should resolve within the next 10 days.
Let us know how you get on.
Best wishes
Vinod
Disclaimer: Please see your own dentist/doctor for a proper diagnosis as my words should not, in any circumstances, be taken as dental/medical advice.
"If you see what is small as it sees itself, and accept what is weak for what strength it has, and use what is dim for the light it gives, then all will go well. This is called Acting Naturally."
Lao-Tsu, Tao Teh King
