9. Excessive bruising
The occasional unexplained bruise is nothing to worry about – perhaps you bumped into something stumbling to the bathroom last night. But if you start to notice bruises popping up all the time, especially in strange places like your hands or fingers, it should raise an alarm.
Pay attention to bruising that forms easily, from even the smallest accident, or bruising that occurs often, and you’re not sure how it got there. This can be a sign of leukemia, according to Cancer Treatment Centers of America. Over time, leukemia impairs the blood’s ability to carry oxygen and clot.