What happens if blood platelets are absent in blood?

The blood platelets are required for the process of blood clotting. Whenever there is an injury, to prevent the loss of blood it is necessary to form a clot. The vitamin K, clotting factors, calcium ions and the platelets are necessary agents for the formation of a blood clot. If there are no platelets, there will be no clot formation. This might result in haemorrhage in which there is continuous blood loss.