A blood disorder is any condition that impacts one or more parts of the blood, usually interfering with its ability to work correctly.Many blood disorders take their name from the component of the blood they impact.The following categories describe blood disorders that cause a decrease in blood components or affect their function:
anemia – if the disorder involves red blood cells, leukopenia – if the disorder affects white blood cells, thrombocytopenia – if the disorder concerns platelets
Categories of blood disorders that increase blood components are:
erythrocytosis – if the disorder involves red blood cells
leukocytosis – if the disorder affects white blood cells
thrombocythemia or thrombocytosis – if the disorder concerns platelets