Continual, unexpected weight loss
Headaches, often with vomiting – at night or early morning
Increased swelling, or persistent pain in bones, joints, back or legs
Lump or mass, especially in the abdomen, neck, chest, pelvis, or armpits
Development of excessive bruising, bleeding or rash
Constant infections
A whitish color behind the pupil
Nausea which persists or vomiting without nausea
Constant tiredness or noticeable paleness
Eye or vision changes which occur suddenly and persist
Recurrent fevers of unknown origin