Seborrheic keratosis is a condition in which harmless growths develop on the skin.
Seborrheic keratoses are benign growths of the skin. They do not represent cancer. They can appear anywhere on the body, but they most often occur on the face, chest, and back. They tend to grow slowly over time. Some persons have hundreds of individual keratoses.
Although the cause of seborrheic keratosis is unknown, the condition does tend to run in families. The condition is more likely as an individual ages, and the number of growths generally increases with age.