American Academy of Dermatology. They don't need treatment, but you may decide to have them removed if they become irritated by clothing or you don't like how they look. Some call seborrheic keratosis growths "the barnacles of aging," as they're most common after age 50.. Seborrheic Keratoses: Who Gets and Causes. They tend to run in families, so genes may be a cause. Ranges in color from light tan to brown or black, Is flat or slightly raised with a scaly surface, Ranges in size from very small to more than 1 inch (2.5 centimeters) across. What causes seborrheic keratoses? The exact etiology of seborrheic keratosis is unknown. Roh NK, et al. Seborrheic keratosis. Int J Dermatol. 2014;53(11):1346-50. doi:10.1111/ijd.12086, Ⓒ 2021 About, Inc. (Dotdash) — All rights reserved, Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. A case report and review of the literature. What Is the Best Way to Treat a Plantar Wart? This is why careful observation of these growths by a dermatologist is important, especially if atypical signs are present, such as: The precise cause of seborrheic keratosis remains unknown. These growths are sometimes referred to as barnacles of aging. As time goes by, more growths appear. Doctors aren’t sure what causes seborrheic keratoses. The growths tend to run in some families, so genes may play a role. This condition is the most deadly form of skin cancer, killing more people than the types. DOI: 10.4103/0973-029X.140926, Wollina U. Seborrheic Keratoses - The Most Common Benign Skin Tumor of Humans. The cause of seborrheic keratoses is unknown. Learn more about seborrheic dermatitis causes, symptoms, diagnosis, and … Ranges in size from very small to more than 1 inch (2.5 centimeters) across 6. If you have a family history of seborrheic keratosis, you may be at greater risk to develop this condition. Seborrheic keratoses themselves are harmless (benign), but secondary tumors from skin cancers such as squamous cell carcinoma or malignant melanoma may sometimes occur within a … Keratosis is an excessive growth of keratin, a skin protein, on the skin. This content does not have an Arabic version. Goldstein BG, et al. The three most common types of keratosis are keratosis pilaris, actinic keratosis, and seborrheic keratosis. A single copy of these materials may be reprinted for noncommercial personal use only. adminsos 25th March 2012. The growths get irritated or bleed when your clothing rubs against them. Seborrheic keratosis is more prevalent among older people. Causes of Seborrheic Keratosis. Clinical and histopathological investigation of seborrheic keratosis. Make a donation. The number of growths typically increases as you age.. Still, the chances are that you can also develop this disease. The condition can impact any part of the body disregarding the way that it spite happens on the waist, midsection and back. The Seborrheic Keratosis Causes are known a genetic component may accept a section in the change of these spots. The condition tends to run in families. However, in some instances, if the growth looks suspicious for skin cancer or there's any doubt about what they are, a skin biopsy can confirm a diagnosis. You may want the growths removed. The major Seborrheic keratosis causes are associated with long periods of exposure to the sun’s ultraviolet rays. It tends to run in families. Ranges in color from light tan to brown or black 2. Normal skin aging plays a role because the growths are more common with age. A seborrheic keratosis growth may be significantly different from others. doi:10.7860/JCDR/2014/8665.4604, Boyd A, Su P, Shyr Y, et al. Seborrheic keratoses are usually round or oval and range in color from light tan to black. Treatment may not be needed depending on the size and location of the seborrheic keratoses. Everything You Need to Know About Skin Cancer on the Scalp, The role of immunosuppression in squamous cell carcinomas arising in seborrheic keratosis, Seborrheic keratosis evolution into squamous cell carcinoma: A truly modified sun-related tumor? https://www.aocd.org/page/SeborrheicKeratoses. A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous skin growth. J Clin Diagn Res. Seborrheic keratoses are harmless and not contagious. Seborrheic Keratoses: Overview. Seborrheic keratoses are not painful but may itch, especially as you get older. If scratched or picked at, the growths can become irritated. When treatment is desired, topically applied creams and acids and surgery may be considered. Has a characteristic \"pasted on\" look 4. Actinic keratosis usually develops in areas that receive frequent, intense, or prolonged UV exposure to the sun or … The causes of seborrheic keratosis can be many and they mostly are in genetics. 2017;10(3):16-25. Genetics: Seborrheic keratosis seems to run in families. Frequent sun exposure. Seborrheic Keratosis Causes. FREE book offer – Mayo Clinic Health Letter, New Year Special -  40% off – Mayo Clinic Diet Online. Schedule your appointment now for safe in-person care. The cells make up approximately 95% of the outer layer of the skin. Seborrheic keratosis is a non-cancerous skin growth that has its root cause in cells of the skin known as keratinocytes. Skin Discoloration: Causes and Treatments, Sun Spots On Skin: Overview, Treatment, and More, COVID-Related Delays Could Lead to More Late-Stage Skin Cancer Diagnoses, Prevention Can Save Your Face From These Skin Cancers. Includes: possible causes, signs and symptoms, standard treatment options and means of care and support. Effectiveness of erbium:YAG laser and cryosurgery in seborrheic keratoses: Randomized, prospective intraindividual comparison study. A Closer Look at Seborrheic Keratoses: Patient Perspectives, Clinical Relevance, Medical Necessity, and Implications for Management. Long exposure to sun. Conic RZ, Napekoski K, Schuetz H, Piliang M, Bergfeld W, Atanaskova Mesinkovska N. The role of immunosuppression in squamous cell carcinomas arising in seborrheic keratosis. Heather L. Brannon, MD, is a family practice physician in Mauldin, South Carolina. Safety and efficacy of hydrogen peroxide topical solution, 40% (w/w), in patients with seborrheic keratosis: Results from 2 identical, randomized, double-blind, placebo-controlled, phase 3 studies (A-101-SEBK301/302). Your doctor may recommend removing it so that it can be examined under a microscope if there is a question about the diagnosis. 2014;18:327. It’s not clear what exactly causes seborrheic keratoses. Mayo Clinic does not endorse companies or products. Check out these best-sellers and special offers on books and newsletters from Mayo Clinic. Generally, the lesion is exophytic with a base level flat with the epidermis. Research suggests that people with a suppressed immune system may have an increased risk of this phenomenon, which is called a malignant or cancerous transformation of a seborrheic keratosis.. There are many others, most of which are rare or have an inherited (genetic) basis. Doctors don't know exactly what causes seborrheic keratoses. American Academy of Dermatology Association. While most dermatologists can diagnose them by appearance alone, they may perform a skin biopsy to rule out worrisome conditions like skin cancer. Natural Treatment. © 1998-2021 Mayo Foundation for Medical Education and Research (MFMER). Seborrheic keratosis can sometimes be difficult to distinguish from skin cancer, especially when it first appears. The shapes of the growth vary considerably. Seborrheic keratosis is a non-cancerous skin growth that has the following typical characteristics: Rests flat against the skin or is raised. These growths often develop in families, so genetics may be a factor. 2018; doi:10.1016/j.jaad.2018.05.044. Squamous cell carcinomas in situ arising in seborrheic keratoses: an association with concomitant immunosuppression? Specific Seborrheic Keratosis causes have not been identified yet but some that have been identified as the major culprit of causing this disorder have been listed below for reference: Age. She has been in practice for over 20 years. You're also more likely to have them if you have a family history of the condition. Casey Gallagher, MD, is board-certified in dermatology and works as a practicing dermatologist and clinical professor. Stucco keratosis is a benign lesion that is best regarded as a form of seborrheic keratosis 1).Stucco keratosis lesions appear as keratotic papules or plaques on the lower extremities but are sometimes found on the upper extremities, usually acrally. J Am Acad Dermatol. 2017 Jun;76(6):1146-1150. doi: 10.1016/j.jaad.2016.12.002, Cimpean I, Theate I, Vanhooteghem O. Seborrheic keratosis evolution into squamous cell carcinoma: A truly modified sun-related tumor? They usually appear on the head, neck, chest or back. Del rosso JQ. Seborrheic keratosis showing lackluster surface and appearance of being stuck on the skin surface. Seborrheic dermatitis is a common skin disease that can look like psoriasis, eczema, or an allergic reaction. 2014; 8(7): YD06-YD07. Be proactive and see a dermatologist for a proper diagnosis and treatment plan. Scientists have suggested that a genetic … This site complies with the HONcode standard for trustworthy health information: verify here. Accessed Aug. 15, 2019. This condition can be caused by different things, including: Excessive and constant stress combined with other emotional circumstances. Overview of benign lesions of the skin. Accessed Aug. 15, 2019. Your doctor can usually diagnose a seborrheic keratosis just by looking at it. Is flat or slightly raised with a scaly surface 5. This destroys the growth. 2018;6(11):2270-2275. doi:10.3889/oamjms.2018.460, Gurel MS, Aral BB. Skin specialists always regard seborrheic keratosis as a mere nuisance with no cause for alarm. Phulari RGS, et al. American Academy of Dermatology Association. Growths can vary in appearance but are typically: While they're harmless, some people seek treatment for aesthetic purposes and because the growths can become irritated or get caught on clothes and jewelry. Seborrheic keratosis seems to run in families. American Academy of Dermatology Association. https://www.aad.org/public/diseases/bumps-and-growths/seborrheic-keratoses. Taking a bath with Epsom salt in lukewarm water is incredibly … Mayo Clinic facts about coronavirus disease 2019 (COVID-19), Our COVID-19 patient and visitor guidelines, plus trusted health information, Mayo Clinic Health System patient vaccination updates, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic School of Continuous Professional Development, Mayo Clinic School of Graduate Medical Education, Book: Mayo Clinic Family Health Book, 5th Edition, Newsletter: Mayo Clinic Health Letter — Digital Edition. A case report and review of the literature, Seborrheic Keratoses: Who Gets and Causes, A Closer Look at Seborrheic Keratoses: Patient Perspectives, Clinical Relevance, Medical Necessity, and Implications for Management, Seborrheic Keratoses - The Most Common Benign Skin Tumor of Humans. Seborrheic keratoses. They develop mainly on the face, on the upper body (chest and back), on the back of the hands and on the front of the arms and legs. This is an autosomal dominant form of multiple seborrheic keratoses. Mayo Clinic Q and A: What are seborrheic keratoses? The condition commonly appears after age 40. May itch It typically appears on the face, chest, shoulders or back. Seborrheic Keratosis Causes. Too much sun exposure may also play a role. Seborrheic Keratosis develop individually or in plural in many people at an advanced age (occasionally also in young adults). "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. It has been noted that eruptive seborrheic keratosis often follows an episode of sunburn. There is some evidence that skin exposed to the sun is more likely to develop a seborrheic keratosis. Clinical presentation and an update on pathogenesis and treatment options. Seborrheic keratosis aren’t contagious. Advertising revenue supports our not-for-profit mission. Journal of Oral and Maxillofacial Pathology. So there’s no real way to prevent them. Accessed Sept. 11, 2019. Thank you, {{form.email}}, for signing up. Seborrheic keratoses are very common on the back. If you stay in the sun most of the time, you can also develop it. Some can grow large, up to 1 inch (2.5 centimeters) across. You're generally more likely to develop seborrheic keratoses if you're over age 50. Seborrheic keratosis doesn't typically need treatment unless you consider it cosmetically undesirable, it's uncomfortably itchy, or it's easily irritated.. Lesions commonly appear on parts of the body that are more exposed to sunlight. J Clin Aesthet Dermatol. Melanoma, on the other hand, is something completely different. https://www.uptodate.com/contents/search. Is round or oval shaped 3. 2014;18(2):327-30. Read our, Medically reviewed by Casey Gallagher, MD, Medically reviewed by Douglas A. Nelson, MD. The sun may play a role in causing seborrheic keratoses. Seborrheic keratosis. Baumann LS, et al. They can develop as a single growth or in clusters. Journal of the American Academy of Dermatology. This is the most widely accepted explanation owing to the fact that the spots appear on the body surfaces which are most exposed to … Dermatol Reports. 2019 Apr 17;11(1):7999. doi: 10.4081/dr.2019.7999. Starts off as a small, round bump that then thickens and develops a waxy or wart-like appearance (although in some cases, the surface is smooth), Usually brown but may also be white, black, yellow, or grey, Develops anywhere on the skin (e.g., chest, back, face, and neck), but not on the palms and soles, Ranges in size from a pinpoint to over an inch in diameter, Bleeding on or around seborrheic keratoses, Chronic friction (such as inside skin folds). J Oral Maxillofac Pathol. A seborrheic keratosis is a non-cancerous skin tumour that originates from cells in the outer layer of the skin.Like liver spots, seborrheic keratoses are seen more often as people age.. Seborrheic keratosis is a harmless, common skin growth that first appears during adult life. However, growths … Excessive rubbing or scratching may cause lesions to bleed, which can result in infection. These could be signs of skin cancer. You may develop a single growth, though multiple growths are more common.A seborrheic keratosis: 1. It typically appears on the face, chest, shoulders or back. Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Seborrheic keratosis is a non-cancerous skin growth that has the following typical characteristics: This photo contains content that some people may find graphic or disturbing. Dermatologists aren’t sure why seborrheic keratosis develops. Squamous cell carcinomas in situ arising in seborrheic keratoses: an association with concomitant immunosuppression? The good news is that there are several different treatment options available: Research suggests that laser therapy is a better alternative than cryotherapy, as it's less likely to cause hyperpigmentation (when removal of the growth causes darkening of the skin).. Stucco keratosis is a benign keratotic papule that is usually found on the distal aspects of the lower limbs. Seborrheic keratosis can be mistaken for: The different types of skin biopsies that may be performed include: A pathologist then examines the skin samples under a microscope. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Accessed Aug. 15, 2019. Seborrheic keratoses. The cause of seborrheic keratosis is not well understood; however, a combination of environmental factors, such as sun exposure and genetic factors may play a role. American Osteopathic College of Dermatology. Seborrheic keratosis is a benign form of skin tumor. J Dermatolog Treat. 2015 Oct;26(5):477-80. doi: 10.3109/09546634.2015.1024597, Bedir R, Yurdakul C, Gucer H, Sehitoglu I. Basal Cell Carcinoma Arising within Seborrheic Keratosis. Seborrheic Keratoses: Signs and Symptoms. People tend to get more of them as they get older. Some research has suggested that frequent sun exposure may be involved in causing seborrheic keratosis. It’s unclear what causes seborrheic keratosis growths to develop. benign (noncancerous) skin growths that develop from skin cells called keratinocytes Seborrheic keratoses are usually brown, black or light tan. The main cause of actinic keratosis is ultraviolet (UV) exposure, which is why this condition is often referred to as solar keratosis. The cause is unknown. The condition commonly appears after age 40. How Do You Treat Skin Cancer on the Nose? Some people seem to inherit a tendency to get many of these growths.