Leukemia

Leukemia is the cancer of the blood and the blood-forming tissues, including the bone marrow. All types of leukemia weakens the body's ability to fight infection. Leukemia and lymphoma are the cancers most likely to cause fever.
There are many types exist such as acute lymphoblastic leukemia, acute myeloid leukemia, and chronic lymphocytic leukemia. It is also the most common form of childhood cancer.
Leukemia is rare. There are less than 200,000 US cases per year.
==Symptoms==
The symptoms of leukemia include:
*Bone pain
*Joint pain
*Dizziness, lightheadedness, or vertigo
*Fever and chills
*Fatigue and weakness
*Tiredness
*Nausea and vomiting
*Loss of appetite
*Sweating
*Bleeding
*Bruising
*Frequent and severe infections
*Mouth ulcers
*Persistent nosebleeds
*Pallors
*Many red spots at skin
*Difficulty breathing or shortness of breath
*Weight loss
*Swollen lymph nodes
==Causes and risk factors==
Most people who got leukemia don't know what caused it. Many have no risk factors. But the risk factors for leukemia include:
*Smoking
*Exposure to certain chemicals
*Chemotherapy history
*Radiation exposures
*Obesity
*Rare congenital diseases
*Certain blood disorders
*Family history
*Age
*Gender
==Treatment==
Currently, leukemia has no cure, but chemotherapy, radiation therapy, and surgery are treatment options for leukemia.
Category:Cardiovascular system
Category:Cancer
Category:Blood