| Large size |
Most melanomas are at least 5 millimeters (about 1/4 inch) across when they are found; many are much larger. An unusually large mole may be melanoma.
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| Many colors |
A mixture of tan, brown, white, pink, red, gray, blue, and especially black in a mole suggests melanoma.
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| Irregular border |
If a mole has an edge that is irregular or notched, it may be melanoma.
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| Abnormal surface |
If a mole is scaly, flaky, oozing, or bleeding, has an open sore that does not heal, or has a hard lump in it, it may be melanoma.
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| Unusual sensation |
If a mole itches or is painful or tender, melanoma may be present.
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| Abnormal skin around mole |
If color from the mole spreads into the skin around it or if this skin becomes red or loses its color (becomes white or gray), melanoma may be present.
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