Is the cause of coughing up blood (hemoptysis) always known?
ANSWER
In many people with hemoptysis, no cause is ever identified. Most people with unexplained hemoptysis are no longer coughing up blood six months later.
From: Coughing Up Blood (Hemoptysis) WebMD Medical Reference
Reviewed by Nayana Ambardekar on November 18, 2017
SOURCES:
Mason, R. , 5th edition, Saunders, 2010. Cahill, B.C. 1994; vol 15: pp 147-167. Murray and Nadel’s Textbook of Respiratory MedicineClinics in Chest Medicine,
Hirshberg, B. , 1997; vol 112: pp 440-444. Chest
Adelman, M. 1985; vol 102: pp 829-834. Annals of Internal Medicine,
Chang, J.C. 1987; vol 4: pp 49-54. Sarcoidosis,
SOURCES:
Mason, R. , 5th edition, Saunders, 2010. Cahill, B.C. 1994; vol 15: pp 147-167. Murray and Nadel’s Textbook of Respiratory MedicineClinics in Chest Medicine,
Hirshberg, B. , 1997; vol 112: pp 440-444. Chest
Adelman, M. 1985; vol 102: pp 829-834. Annals of Internal Medicine,
Chang, J.C. 1987; vol 4: pp 49-54. Sarcoidosis,
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