Alveolar bleeding assoc w/pulmonary capillaritis, diffuse alveolar damage (e.g with ARDS), or no inflammation (e.g. mitral stenosis/severe elevation LVEDP, use of anti-coagulants)
Capillaritis related to GPA, EPA, anti-glomerular basement ab, mpa, behcets, other connective tissue d/o, medications (can induce capillaritis) including: hydralazine, PTU, infliximab, other
Symptoms
May have known systemic inflam d/o or DAH can be first manifestation
Hemoptysis, SOB, DOE, F, CP
Often life threatening (clots form in airways, preventing air flow)