_:vb50950618 . _:vb50950618 . _:vb50950618 "A blood coagulation disease that is characterized by an abnormal increase or decrease in platelets or platelet dysfunction."^^ . _:vb50950618 . _:vb50950618 "url:https://www.merckmanuals.com/home/blood-disorders/platelet-disorders/overview-of-platelet-disorders"^^ . _:vb50950618 .