My four year old son had ITP. He went from having a platelet count of 8000 in May to 295K in December after an IVig treatment. Our doctor officially declared him an acute case at that point and said he is done with ITP! However, he just had his platelet count done today as he suffered a minor injury and the ER wanted an accurate platelet count before suturing. It has dropped to 185K in just four weeks. It's still in the normal range but we were surprised at the drop. Any thoughts?