(Benign Skin Tumors)
Seborrheic keratosis is a type of benign raised growth on the skin. The growths develop from the top layer of skin. These growths may look like warts, but do not extend deep into the skin, or contain the viruses that cause warts.
Seborrheic keratoses are not contagious, do not spread, or do not turn into cancerous tumors. In most cases, treatment is not required.
Skin Section with Seborrheic Keratosis
The direct cause of seborrheic keratosis is unknown, but it may be linked to genetics.
Seborrheic keratosis is more common in people aged 40 years and older and in those with a family history.
Symptoms may include skin growths that may be:
- Yellow, tan, brown, or black
- Itchy if irritated by clothing or jewelry
- Round or oval in shape
Your doctor will ask about your symptoms and medical history. A physical exam will be done. Your doctor can usually make a diagnosis upon examination of the skin growth. You may need further testing, such as a biopsy, to rule out other skin conditions.
Talk with your doctor about the best treatment plan for you. Seborrheic keratoses do not pose a threat to your health. The best course of action may be to leave them alone. If they itch or become irritated, or if you feel they affect your appearance, they can be removed.
Treatment options include:
If you have irritated seborrheic keratoses, your doctor may recommend topical corticosteroids.
There are no current guidelines to prevent seborrheic keratosis.
American Academy of Dermatology
Family Doctor—American Academy of Family Physicians
Canadian Dermatology Association
Seborrheic keratosis. American Academy of Dermatology website. Available at: http://www.aad.org/dermatology-a-to-z/diseases-and-treatments/q---t/seborrheic-keratoses. Accessed September 28, 2014.
Seborrheic keratosis. American Osteopathic College of Dermatology website. Available at: http://www.aocd.org/?page=SeborrheicKeratoses. Accessed September 28, 2014.
Seborrheic keratosis. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated July 18, 2013. Accessed September 28, 2014.
Last reviewed August 2014 by Brian Randall, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.