Skin Cancer Symptoms

Skin cancer can be found early, and both doctors and patients play important roles in detecting skin cancer. If you are in a high-risk group for skin cancer or have ever been treated for some form of the disease, you should recognize how skin cancers look. Examine your skin from head to toe every few months to check every inch of skin and pay special attention to moles and sites of previous skin cancer. If you find a suspicious growth, tell your doctor.

The general warning signs of skin cancer to look for include:

  • Any change in size, color, shape or texture of a mole or other skin growth
  • An open or inflamed skin wound that won't heal

Melanoma, the most dangerous type of skin cancer, may appear as:

  • A change in an existing mole
  • A small, dark, multicolored spot with irregular borders – either elevated or flat – that may bleed and form a scab
  • A cluster of shiny, firm, dark bumps
  • A mole larger than a pencil eraser

Basal cell carcinoma may appear on sun-exposed skin as:

  • A pearly or flesh-colored oval bump with a rolled border, which may develop into a bleeding ulcer
  • A smooth red spot indented in the center
  • A reddish, brown or bluish-black patch of skin on the chest or back

Squamous cell carcinoma may appear on sun-exposed skin as:

  • A firm, reddish, wart-like bump that grows gradually
  • A flat spot that becomes a bleeding sore that won't heal

Call your doctor about skin cancer if:

  • An existing mole changes size, shape, color or texture; or you develop a very noticeable new mole as an adult
  • A new skin growth or open sore does not heal or disappear in six weeks