Acute Lymphoblastic Leukaemia is a type of cancer in which the bone marrow starts producing a large number of lymphocytes (a type of white blood cells) increases in the bone marrow. It affects the red blood cells, white blood cells, and the platelets. When a person undergoes chemotherapy or is exposed to radiation, the risks of developing ALL increases. ALL affects both, children and adults, and it progresses quickly, it not treated. Blood test and bone marrow tests are conducted to reach a conclusion. The symptoms for ALL includes; Fever , Exhaustion, Bruising easily , Severe weight loss, Constant stomach ache, Joint pain, Painless lumps in neck, underarm, stomach, or groin, Bleeding.