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Buerger's disease is an inflammation of the arteries, veins, and nerves in the legs, principally, leading to restricted blood flow. Left untreated, Buerger's disease can lead to gangrene of the affected areas. Buerger's disease is also known as thromboangitis obliterans.
Introduction. 1  Angina bullosa hemorrhagica (ABH) is a rare benign disorder characterized by sudden onset of painless, blood-filled, blisters of the oral cavity that quickly expand and rupture spontaneously within 24 to 48 hours. 2  A 45-year-old man presented to clinic with a 4-day history of multiple, tender hemorrhagic bullae of the oral cavity. He reported the first lesion appeared on the left buccal mucosa after he consumed an apple, followed by acute rupture and subsequent bleeding.