Angina Bullosa Hemorrhagica of the Oral Mucosa: A Case Report

Angina bullosa hemorrhagica (ABH) is a condition of the oral mucous membrane, characterized by the sudden appearance of blood-filled blister(s) within the oral cavity. In the majority of cases, these blisters occur on the oropharynx or palate. The blisters usually rupture in a day or two and heal spontaneously without any further scarring or discomfort. In rare cases, if a large lesion located in the throat does not rupture spontaneously, it may lead to airway obstruction. We present the case of a 64-year-old-female who presented with a recurrent manifestation of well-defined oral blood-filled blisters which ruptured and healed spontaneously. There were no identifiable risk factors. Angina bullosa hemorrhagica was diagnosed clinically. The main objective of this case report is to bring awareness and avoid unnecessary investigations and misdiagnosis.