There is no direct relationship between fever and platelets. Fever does not cause a decrease in platelets, but a decrease in platelets tends to be accompanied by fever. If the fever is caused by a viral infection, platelets will show a transient decrease. When you have a high fever, you need to take medication to reduce the fever, and after taking medication to reduce the fever, it may lead to a decrease in platelets. Primary thrombocytopenia, the clinical manifestations of fever, weakness, fatigue, anemia and so on. Because platelets mainly have the function of hemostasis and coagulation, after the decrease of platelets, the body’s resistance drops, which can easily lead to the occurrence of fever, and timely replenishment of platelets, the body temperature can be restored to normal. Platelet reduction caused by viral infection does not require special treatment, and regular checkups will suffice.