Quantcast This image displays multiple brown, slightly elevated lesions typical of seborrheic keratoses. Seborrheic keratoses are common, benign skin lesions in adults. They have a "stuck on" and rough surface appearance. Seborrheic keratoses have a "stuck on" or rough surface appearance, which can be skin-colored or dark. A waxy, tan-colored, "stuck-on-appearing" lesion is characteristic of a seborrheic keratosis. Seborrheic keratoses are harmless thickenings of the outer layer of skin. This image displays a raised lesion typical of seborrheic keratosis. A seborrheic keratosis lesion can sometimes become black, as displayed in this image. This image displays a lesion, with a sharp border and rough surface that appears to be sitting on top of the skin, typical of seborrheic keratosis. Seborrheic keratoses may become very large and lumpy in the scalp area. There are several on this man, which have grown into each other over time. Typical to seborrheic keratoses, this image displays a brown, rough-appearing lesion. The dark to light brown raised, rough areas of seborrheic keratoses may be numerous in the elderly. The dark to light brown raised, rough areas of seborrheic keratoses may be numerous in the elderly. The multiple small, light brown freckles seen here reflect sun damage, but the darker, larger spot on the upper nose bridge is a rough, scaling seborrheic keratosis. Dark brown, rough seborrheic keratoses may be found on any skin area, even inside the ear rim.
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Seborrheic Keratosis:
Information for adults

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Picture of Seborrheic Keratosis: This image displays multiple brown, slightly elevated lesions typical of seborrheic keratoses. Divider line
This image displays multiple brown, slightly elevated lesions typical of seborrheic keratoses.
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Signs and Symptoms
One or more spots can occur anywhere on the body, except for palms, soles, and mucous membranes (eg, in the mouth or rectum). They do not go away. They do not turn into cancers, but some cancers resemble seborrheic keratosis.

They start as light brown to skin-colored, flat areas, which are round to oval and of varying size (usually less than a half inch, but sometimes much larger). As they grow thicker and rise above the skin surface, seborrheic keratoses may become dark brown to almost black with a "stuck on" appearance. The surface may feel smooth or rough.
Last Modified: 25 Aug 2008

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