Most of the drugs that can cause drug-induced immune thrombocytopenia are haptens. When combined with platelets, they induce the body to produce antibodies. Therefore, it is the key to stop the drug immediately. After the drug is stopped, the platelets will rise on their own. Drugs can cause severe thrombocytopenia and dysfunction, and bleeding tends to be severe. Currently known are heparin, ristocetin, protamine sulfate, etc.