What causes lumbosacral back pain in subacute infective endocarditis (IE)?

Updated: Jan 03, 2019
  • Author: John L Brusch, MD, FACP; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The origin of lumbosacral back pain in patients with subacute IE (15%) is unclear but probably results from the deposition of immune complexes in the disk space. However, antibiotic therapy rapidly abolishes these symptoms. In 50% of patients with cerebral emboli, this event is the first manifestation of IE and is associated with a 2- to 4-times higher mortality rate. Stroke in younger people should always raise the possibility of underlying IE.


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