Both inherited and acquired thrombotic thrombocytopenic purpura (TTP) occur suddenly with no clear cause. You can't prevent either type.
If you've had TTP, watch for signs and symptoms of a relapse (flareup). (For more information, go to "Living With Thrombotic Thrombocytopenic Purpura.")
Ask your doctor about factors that may trigger TTP or a flareup, including:
- Some diseases or conditions, such as pregnancy, cancer, HIV, lupus, or infections.
- Some medical procedures, such as surgery and blood and marrow stem cell transplant.
- Some medicines, such as ticlopidine, clopidogrel, cyclosporine A, chemotherapy, and hormone therapy and estrogens. If you take any of these medicines, your doctor may prescribe a different medicine.
- Quinine, which is a substance often found in tonic water and nutritional health products.