idiopathic thrombocytopenic purpura pathophysiology

I am a person who has a question. This is probably a good place to do so. I want to ask something of idiopathic thrombocytopenic purpura pathophysiology. I am interested about basic information’s for such disease and about frequency. I am looking for your respond and I hope that will be as soon as possible. Thanks for any detail you have for me.