Seborrheic Keratosis

Adult Skin Problems

Photo of seborrheic keratosis
Courtesy of the Centers for Disease Control and Prevention (CDC)

Seborrheic keratoses are noncancerous (benign) skin growths that some people develop as they age. They often appear on the back or chest, but can occur on any part of the body. Seborrheic keratoses grow slowly, in groups or singly. Most people will develop at least one seborrheic keratosis during their lifetime.

The appearance of seborrheic keratoses can vary widely. They may be light tan to brown or black. The most common texture is rough, with a bumpy, grainy surface that crumbles easily. However, they also may be smooth and waxy. They usually look like they've been stuck onto the skin. While some are tiny, others grow larger than 3 cm in diameter.

Seborrheic keratoses may be mistaken for warts, moles, skin tags, or skin cancer. Read more about the causes, treatments, and symptoms of seborrheic keratoses.

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Article: Seborrheic Keratosis - Topic Overview
Article: Seborrheic Keratosis - Symptoms
Article: Seborrheic Keratosis - Treatment Overview

WebMD Image Collection Reviewed by Stephanie S. Gardner, MD on May 27, 2019



Image: Courtesy of the Centers for Disease Control and Prevention (CDC)

Text: "Seborrheic Keratosis - Topic Overview", WebMD Medical Reference from Healthwise

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