Question: what cancers cause high white blood cell count?
Answer: Acute lymphocytic leukemia.
Acute myelogenous leukemia (AML)
Allergy, especially severe allergic reactions.
Chronic lymphocytic leukemia.
Chronic myelogenous leukemia.
Drugs, such as corticosteroids and epinephrine.
Infections, bacterial or viral.
Myelofibrosis (a bone marrow disorder)