Symptoms of leukemia depend on how much the cancer has grown and may include:

• Fevers and night sweats.
• Frequent or unusual infections.
• Weakness and fatigue.
• Headaches.
• Bruising of the skin and bleeding from the gums or rectum.
• Bone pain.
• Joint pain.
• Swelling in the belly or pain on the left side of the belly or in the left shoulder from a swollen spleen.
• Swollen lymph nodes in the armpit, neck, or groin.
• Decreased appetite and weight loss because you feel full and don't want to eat.

The chronic forms of leukemia often cause no symptoms until much later in the disease.