What is the pathophysiology of immune thrombocytopenia (ITP)?

Updated: Dec 14, 2019
  • Author: Michael A Silverman, MD, MD; Chief Editor: Gil Z Shlamovitz, MD, FACEP  more...
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Answer

ITP is primarily a disease of increased peripheral platelet destruction, with most patients having antibodies to specific platelet membrane glycoproteins. Relative marrow failure may contribute to this condition, since studies show that most patients have either normal or diminished platelet production.

Acute ITP often follows an acute infection and has a spontaneous resolution within 2 months. Chronic ITP persists longer than 6 months without a specific cause.


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