Blood disorders are conditions that keep parts of your blood from doing their jobs. You may have a blood clotting disorder or a bleeding disorder. With treatment, most blood disorders become chronic illnesses that don’t affect people’s lifespans.

This is an incomplete list, which may never be able to satisfy certain standards for completion. There are many conditions of or affecting the human hematologic system—the biological system that includes plasma, platelets, leukocytes, and erythrocytes, the major components of blood and the bone marrow. [1]

WebMD explains different types of blood disorders and their causes, symptoms, diagnosis, and treatment.

Common blood disorder symptoms include unexplained exhaustion and weight loss. Learn more about the types of blood disorder and the signs to look out for here.

Any health condition in which something is wrong with part of the blood is a blood disorder. Some blood disorders are cancers. Common blood cancers include: • Non-Hodgkin’s lymphoma. •...