Hemophilia, von Willebrand disease, anemia, leukemias, or a low platelet count can cause bruising. A person should contact a doctor if they are concerned about their bruising. Bruising is one of the ...

Myeloproliferative neoplasms (MPNs) are a group of rare blood cancers in which the bone marrow produces an excess combination of white blood cells, red blood cells, and platelets. This overproduction ...