Acute lymphoblastic leukaemia (ALL) is a type of cancer that affects the blood and bone marrow. It is a cancer of the white blood cells, which are an important part of the immune system. ALL is a rapidly progressing disease that can be fatal if not treated promptly. It is most common in children, but it can also occur in adults. The symptoms of ALL may include fatigue, weakness, fever, easy bruising or bleeding, bone pain, and an increased risk of infections. The treatment for ALL may include chemotherapy, radiation therapy, and/or stem cell transplant. The specific treatment plan will depend on the specific type of ALL and the patient's age and overall health. Acute lymphoblastic leukaemia elaborate its causes and symptoms The exact cause of acute lymphoblastic leukaemia (ALL) is not fully understood. However, certain factors may increase the risk of developing ALL, including: Exposure to high levels of radiation or certain chemicals Having a family history