A blood blister in mouth is formed below the outermost layer of the skin because of minute tearing of blood vessels. It is one form of Angina bullosahemorrhagica (ABH), which is often misunderstood with other serious issues such as mucous membrane pemphigoid, epidermolysisbullosa, linear IgA, dermatitis herpetiformis). Blood blisters are painful and interfere with food… Continue reading Blood Blister in the Mouth and Cheek – Causes