A high platelet count can lead to mild bruising or serious conditions like stroke. There are two types of thrombocytosis: primary, caused by genetic changes, and secondary, due to other conditions. If ...

A high platelet count indicates too many of the small cells (platelets) that help form blood clots. This can cause dangerous clots and bleeding. Also called thrombocytosis or thrombocythemia, ...

Winter storms and seasonal illnesses have caused a critical need for blood donations, which hospitals rely on to treat their patients.

The American Red Cross is facing a severe blood shortage as requests from hospitals exceed the available supply of blood, ...