A blood disease is a disorder that affects the components of blood, including red and white blood cells, platelets, and plasma. There are many synonyms for this term, including hematologic disease, hematological disorder, blood disorder, blood ailment, hemopathy, blood pathology, and hematopathy. These conditions can affect the function of blood in many ways, including clotting disorders, anemia, infections, cancers, and autoimmune disorders. Some common examples of blood diseases include leukemia, sickle cell anemia, hemophilia, and lymphoma. These disorders require specialized treatment and care from medical professionals, and it is important to seek help if you experience any symptoms of a blood disease.