(HealthDay News) — You should never ignore a change in skin color, especially if you have cancer, the American Cancer Society says.

A change in skin color typically means something’s wrong in the body. In people with cancer, it can be due to factors including tumor growth, sun exposure or a side effect of treatment, the society says.

Here is the organization’s list of changes to watch for:

  • Yellowish skin or the whites of the eyes (jaundice). This may indicate an issue with the liver.
  • Bruises or areas of blue or purple skin that have no known cause.
  • Pale or blue-tinged skin, lips or nail beds.
  • Redness or rash.
  • Swelling in an area that’s discolored.
  • Itching.
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