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A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous (benign) skin growth. People tend to get more of them as they get older. Seborrheic keratoses are usually brown, black or light tan. The growths (lesions) look waxy or scaly and slightly raised. They appear gradually, usually on the face, neck, chest or back. Seborrheic keratoses are harmless and not contagious. They don't need treatment, but you may decide to have them removed if they become irritated by clothing...
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A seborrheic keratosis grows gradually. Signs and symptoms might include:
Experts don't completely understand what causes a seborrheic keratosis. This type of skin growth does tend to run in families, so there is likely an inherited tendency. If you've had one seborrheic keratosis, you're at risk of developing others.
A seborrheic keratosis isn't contagious or cancerous.
A seborrheic keratosis typically doesn't go away on its own, but treatment isn't needed. You might choose to have it removed if it becomes irritated or bleeds, or if you don't like how it looks or feels.
Seborrheic keratosis removal can be achieved with one or a combination of the following methods:
Talk with your doctors about the risks and benefits of each method. Some methods can cause permanent or temporary skin discoloration and scarring. After treatment, you might devel...
For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.
© Mayo Clinic
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