Also called seborrheic warts, seborrheic keratoses are harmless, wartlike growths that most commonly occur on the trunk but may also affect the head, neck, forearms, or backs of the hands.
Typically, they appear as crusty or greasy spots, usually brown or black in color. They are painless but may be itchy.
The growths do not need treatment, although a doctor should be consulted to check that the growth is not a type of skin cancer.
If a seborrheic keratosis is troublesome, it may be removed by scraping it off or by freezing.

Othere related diseases

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PARONYCHIA
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PITYRIASIS ROSEA
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