12. New or Changing Moles or Skin Spots
Although most skin changes are not dangerous and don’t cause pain, doctors recommend screening for
cancer if you notice:
new spots, growths, or sores on the skin that don’t heal
changes in color, symmetry, diameter, or border of your existing mole.
13. Nail Changes
Although strange changes in your fingernails can appear for many reasons, they can also be warning signs of skin,
lung, or liver cancer.
brown or black spots under fingernails can be a sign of skin cancer enlarged ends of the nails (clubbing of the toes or fingers)
can be linked with lung cancer.
This problem is caused by conditions which lower the amount of oxygen in the blood
white or pale nails can indicate poor functioning of the liver caused by many diseases, such as liver cancer