Oral Hemorrhagic Blister: An Enigma
A 48-year-old woman presented with asymptomatic recurrent blood filled blister in the oral cavity with a history of irregular and intermittent appearance since 25 years. In most instances, lesion appeared singly on the lateral aspect of tongue but also involved soft palate occasionally. Each episode lasted for an average of three to four days. Lesions healed spontaneously without any sequel but lesion recurred every year once or twice without any seasonal predilection. No history of similar lesions elsewhere on the body. No history of intake of any other drugs, No history suggestive of precipitating factors like trauma, steroid inhalation, blood dyscrasias. Not a known diabetic, hypertensive or asthamatic. No significant family history.\nOn examination, there was solitary oval tense hemorrhagic bulla measuring about 2 × 1.5 cm over the lateral margin of tongue on the right side []. Surrounding mucosa was normal without any evidence of erythema or scarring. Lesion ruptured on manipulation with oozing of clear and thin blood mixed fluid.