3. Dizziness
Those suffering from the early signs of leukemia might feel dizzy or faint, especially when standing up.This can be the result of tiredness and weakness, as well as being caused by changes to the blood.
As well as affecting the white blood cells, it is not uncommon for the red blood cells to be affected too, resulting in a condition called anemia. With not enough blood getting to the brain, the patient can feel faint and dizzy and especially if they stand up quickly.