Commonly, infection: Infection such as bronchitis, is the most common cause of blood tinged sputum. However, if this persist , other conditions such as tuberculosis, abscess, cancer, abnormal blood vessels, blood clots, fungal disease may be present. If it doesn't stop on its own, seek medical attention.
Answered 3/1/2018
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Hemoptysis: Bronchitis/pneumonia/congestive heart failure/pulmonary embolus/ ling cancer with airway involvement to name a few. If symptoms persist, you should seek medical attention sooner rather than later.
Answered 3/28/2013
5.2k views
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