Blood diseases affect the production of blood and its components, such as blood cells, hemoglobin, blood proteins, the mechanism of coagulation, etc.

-- from wikipedia.org

The following articles provide a more indepth look at the causes and treatment of blood disorders.

A Look at Leukemia
Leukemia is a serious medical condition that needs to be treated right away. Left untreated, it can often result in death. When talking about leukemia, it is important to note that this is a blood disorder, but it is also cancer...