20 Most Common Cancer Signs that You Probably Ignored – But shouldn’t

6. Skin discoloration

Don’t overlook the changes in skin color. A change in your skin could signify a more advanced cancer. If your skin becomes yellowish, it may indicate a severe issue with the liver-specifically, a tumor that's blocking the bile duct and causing bile to enter the bloodstream. If you skin becomes slightly blue, it may indicate breathing problems. For cancer patients, discoloration of your skin could be the side effects of some certain cancer treatments.