Unpredictable and potentially life-threatening, immune thrombocytopeni
a can occur with any drug, at times even after long, uneventful use. H
eparin is the most common cause; although the fall in platelet count t
ends to be modest, these cases are particularly dangerous because of a
ssociated thrombosis, Much has been learned about heparin-induced dise
ase, but complex issues remain.