Seborrheic Keratosis

What Is It?
Seborrheic keratosis is raised, warty lesions, usually appearing on the face, trunk and upper extremities. They are benign (non-cancerous) skin tumors. The lesion starts as a stain, spot or thickening on the skin. They are oval to round and are slightly elevated. Color ranges from skin-color, light tan or brown, darkening over time. The surface is often crumbly and has a "pasted-on" appearance.

What Causes It?
Seborrheic keratosis is a hereditary condition that gradually appears during middle-age years and continues to grow slowly over a lifetime.  

What Can Be Done?
The best treatment for irritated or changing Seborrheic Keratosis is removal, or scraping, so it may be examined by a pathologist to rule out a more serious problem such as skin cancer. Some may be treated with liquid nitrogen to destroy the lesion. Otherwise, they may be observed without aggressive treatment.