Generally speaking, leukemia can manifest symptoms related to a decrease in all three blood cell lines. Changes in these three lines typically include an increase or decrease in white blood cells, a decrease in red blood cells leading to symptoms of anemia, and a reduction in platelets, resulting in symptoms of bleeding. Children with leukemia often experience recurrent fevers and are prone to infections, as well as bleeding gums. There may also be enlargement of the liver, spleen, and lymph nodes, along with pallor of the face and lips, which appear pale and bloodless.