If the skin lesion becomes invasive, it might have a smooth surface at first that becomes thicker with an irregular surface.
There could be a thickening part of the lesion, and an increasing number of colours, especially blue or black.
Ulceration could develop, bleeding, itching or stinging – if any any point you are concerned, book an appointment with your doctor.
After an initial observation, you might be referred for a biopsy as a diagnostic measure.
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