Diffuse alveolar hemorrhage (DAH) is a rare, acute, and life-threatening condition that in most cases is associated with pulmonary-renal syndromes, connective tissue disorders, infections, and drugs. We report a case of a 45-year-old male who developed a diffuse pulmonary hemorrhage after taking 500 mg of acetylsalicylic acid for a month in the context of acute lower back pain. The prolonged use of this acetylsalicylic acid dose led to an increased risk of bleeding. This report describes a rare bleeding site that clinicians should be aware of when managing patients who were exposed to prolonged high dose acetylsalicylic acid.
Keywords: acetylsalicylic acid; antiplatelet therapy; diffuse alveolar hemorrhage; dyspnea; hemoptysis.
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