Rogowacenie łojotokowe

Rogowacenie łojotokowe
Objawy

Seborrheic keratosis (rogowiak łojotokowy) to łagodny rozrost naskórka, najczęściej występujący u osób po 40. roku życia, ze szczytem zachorowań po 50. roku życia, obejmujący ponad 90% populacji powyżej 60 lat. Zmiany mają charakterystyczny wygląd: okrągłe lub owalne, o powierzchni woskowatej, szorstkiej lub łuszczącej się, z teksturą przypominającą brodawkę lub roztopiony wosk, o rozmiarze od kilku milimetrów do ponad 2,5 cm średnicy. Barwa zmian jest zróżnicowana – od jasnobrązowej, brązowej, czarnej, po białą, cielistą, żółtą, różową czy szarą, z tendencją do ciemnienia. Lokalizują się głównie na klatce piersiowej, plecach, ramionach, brzuchu, twarzy, szyi i owłosionej skórze głowy, rzadko na dłoniach, podeszwach i błonach śluzowych. Występują pojedynczo lub w grupach, a u osób o ciemniejszym fototypie skóry często jako dermatosis papulosa nigra wokół oczu.

Objawy Seborrheic Keratosis

Wygląd zmian
Kolor zmian
Rozmiar i liczba zmian
Lokalizacja zmian

Przebieg i progresja schorzenia

Rozwój zmian
Występowanie w zależności od wieku
Objawy towarzyszące i dolegliwości
Przebieg naturalny
Niepokojące objawy
Prognoza i powikłania
Szczególne warianty przebiegu
Kolejne rozdziały

Objawy Seborrheic Keratosis

Seborrheic keratosis (rogowiak łojotokowy) to łagodny (nienowotworowy) rozrost naskórka, który jest jednym z najczęstszych zmian skórnych spotykanych u osób dorosłych, szczególnie w średnim i starszym wieku¹². Zmiany te rozwijają się stopniowo, a ich objawy mogą się różnić w zależności od stadium rozwoju i indywidualnych cech pacjenta³.

Wygląd zmian

Seborrheic keratosis charakteryzuje się bardzo charakterystycznym wyglądem. Typowe cechy obejmują:

Kształt: okrągły lub owalny¹²
Powierzchnia: woskowata lub szorstka, czasem z łuszczącą się powierzchnią³⁴
Wygląd „przyklejonej” lub „nałożonej” zmiany na skórę – charakterystyczny objaw⁵⁶⁷
Tekstura: może przypominać brodawkę, być podobna do roztopionego wosku świecy lub pszczelego przylegającego do skóry⁸⁹
Wypukłość: od płaskich zmian do wyraźnie uniesionych ponad poziom skóry¹⁰¹¹

Kolor zmian

Rogowiaki łojotokowe mogą występować w różnych kolorach, co czasem utrudnia ich odróżnienie od innych zmian skórnych¹:

Najczęściej są barwy jasnobrązowej, brązowej lub czarnej²³
Mogą też być koloru białego, cielistego, żółtego, różowego, szarego⁴
Z czasem mogą ciemnieć⁵⁶
U osób o ciemniejszym fototypie skóry często występują jako ciemnobrązowe lub czarne zmiany⁷

Rozmiar i liczba zmian

Seborrheic keratosis może znacznie różnić się pod względem rozmiaru i liczby występujących zmian:

Rozmiar: od bardzo małych (kilka milimetrów) do ponad 2,5 cm średnicy¹²³
Liczba: może wystąpić pojedyncza zmiana lub setki zmian na ciele⁴⁵
Mogą występować pojedynczo lub w grupach/klastrach⁶⁷
U niektórych osób mogą tworzyć skupiska małych zmian, szczególnie wokół oczu⁸⁹

Lokalizacja zmian

Rogowiaki łojotokowe mogą występować niemal na każdej części ciała, jednak mają pewne predylekcje¹:

Najczęściej pojawiają się na klatce piersiowej, plecach, ramionach i brzuchu²³
Często występują również na twarzy, szyi i owłosionej skórze głowy⁴⁵
Nie pojawiają się na dłoniach, podeszwach stóp oraz błonach śluzowych⁶⁷
U osób o ciemniejszej karnacji charakterystyczne są małe, ciemne zmiany skupione wokół oczu, nazywane czasem dermatosis papulosa nigra⁸⁹

Przebieg i progresja schorzenia

Rozwój zmian

Seborrheic keratosis charakteryzuje się powolnym, stopniowym rozwojem¹²:

Zmiany zaczynają się zazwyczaj jako małe, szorstkie guzki lub płaskie plamy³⁴
Z czasem stają się grubsze i mogą rozwijać brodawkowatą powierzchnię⁵⁶
Mogą stopniowo zwiększać swój rozmiar i ilość na przestrzeni lat⁷⁸
Tekstura powierzchni może zmieniać się stopniowo w czasie⁹

Występowanie w zależności od wieku

Rogowiaki łojotokowe są silnie związane z wiekiem pacjenta¹²:

Pierwsze zmiany pojawiają się zazwyczaj w średnim wieku (po 40. roku życia)³⁴
Szczyt występowania przypada na okres po 50. roku życia⁵⁶
U osób po 60. roku życia rogowiaki łojotokowe występują u prawie wszystkich osób (ponad 90%)⁷⁸
Rzadko występują u osób poniżej 20. roku życia⁹
Wraz z wiekiem zazwyczaj zwiększa się liczba zmian¹⁰¹¹

Objawy towarzyszące i dolegliwości

Seborrheic keratosis zwykle nie powoduje dolegliwości, jednak mogą wystąpić pewne objawy¹²:

Świąd – najczęstszy objaw subiektywny, szczególnie w przypadku zmian podrażnionych³⁴⁵
Podrażnienie – może wystąpić w wyniku tarcia o ubranie lub biżuterię⁶⁷
Krwawienie – może pojawić się po urazach lub przy podrażnieniu zmiany⁸⁹
Zaczerwienienie i stan zapalny – charakterystyczny dla podrażnionego rogowiaka łojotokowego¹⁰¹¹
Dyskomfort – zwłaszcza gdy zmiana zahacza o ubranie lub jest lokalizowana w miejscach narażonych na tarcie¹²¹³

Przebieg naturalny

Naturalny przebieg rogowiaka łojotokowego charakteryzuje się następującymi cechami¹²:

Zmiany mają tendencję do utrzymywania się przez długi czas³⁴
Zwykle nie ustępują samoistnie, choć rzadko mogą ulec samoistnemu remisji⁵⁶
Z czasem mogą się powiększać i ciemnieć⁷⁸
Po usunięciu zwykle nie nawracają w tym samym miejscu, jednak nowe zmiany mogą pojawiać się w innych lokalizacjach⁹¹⁰¹¹
Nieusunięte zmiany zazwyczaj utrzymują się przez całe życie¹²

Niepokojące objawy

Mimo że seborrheic keratosis jest zmianą łagodną, istnieją pewne objawy, które powinny skłonić do konsultacji lekarskiej¹²:

Nagłe pojawienie się wielu zmian jednocześnie (może to sugerować objaw Leser-Trélata, który bywa wiązany z nowotworami wewnętrznymi)³⁴⁵
Szybki wzrost zmiany lub gwałtowna zmiana jej wyglądu⁶⁷
Krwawienie, owrzodzenie lub brak gojenia się zmiany⁸⁹
Nietypowy kolor zmiany (np. fioletowy, niebieski, czerwono-czarny)¹⁰
Nieregularne brzegi zmiany¹¹
Ból, stan zapalny, nasilony świąd¹²

Prognoza i powikłania

Seborrheic keratosis charakteryzuje się dobrą prognozą, jako że jest zmianą łagodną¹²:

Nie przekształca się w nowotwór złośliwy³⁴
Może czasem być trudny do odróżnienia od czerniaka lub innych nowotworów skóry, stąd potrzeba diagnostyki dermatologicznej⁵⁶
Może powodować dyskomfort psychiczny z powodu aspektu estetycznego⁷⁸
Rzadko opisywano przypadki transformacji rogowiaka łojotokowego w rogowacenie słoneczne typu bowenoidalnego u pacjentów leczonych immunosupresyjnie⁹
Mogą powodować powikłania mechaniczne (podrażnienie, krwawienie, zakażenie wtórne) przy lokalizacji w miejscach narażonych na tarcie¹⁰

Szczególne warianty przebiegu

Istnieją szczególne warianty przebiegu seborrheic keratosis, które wymagają dodatkowej uwagi¹²:

Objaw Leser-Trélata – nagłe pojawienie się licznych rogowiaków łojotokowych, które mogą szybko rosnąć i być swędzące; może towarzyszyć nowotworom wewnętrznym (najczęściej gruczolakorakowi przewodu pokarmowego)³⁴⁵
Podrażniony rogowiak łojotokowy – charakteryzuje się zapaleniem, zaczerwienieniem i strupami; może przypominać zmiany złośliwe⁶⁷
Dermatosis papulosa nigra – wariant występujący głównie u osób o ciemniejszym fototypie skóry, charakteryzujący się licznymi, drobnymi, ciemnymi zmianami zlokalizowanymi głównie na twarzy, szczególnie wokół oczu⁸⁹

Seborrheic keratosis to powszechne, łagodne zmiany skórne, które wymagają diagnostyki różnicowej z nowotworami złośliwymi skóry ze względu na podobieństwo kliniczne¹². W większości przypadków nie wymagają leczenia, chyba że powodują dolegliwości lub stanowią problem estetyczny³⁴. Ważne jest monitorowanie zmian i konsultacja dermatologiczna w przypadku wystąpienia niepokojących objawów⁵⁶.

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Materiały źródłowe

#1 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is a common type of epidermal tumor that is prevalent in middle-aged and older individuals. These lesions are among the most common types of skin tumors seen by primary care physicians and dermatologists in an outpatient setting. […] Seborrheic keratosis is a prevalent benign skin condition made up of immature epidermal keratinocytes. The condition manifests in different forms, ranging from a faintly colored, superficial patch to a brown to black, scaly papule or plaque with a distinctive „stuck-on” appearance. […] Most patients typically observe their initial seborrheic keratosis during their middle adult years. They exhibit gradual growth in both size and quantity over several years. This condition becomes more common as individuals age, and it affects almost all adults who are 60 years of age or older.
#1 Seborrheic keratosis – Symptoms & causes – Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878
Seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#1 Seborrheic keratosis: Treatment, images, and symptoms
https://www.medicalnewstoday.com/articles/266748
Seborrheic keratoses may look like warts, moles, or skin cancer. […] They can have the following features: Color: Tan, brown, yellow, gray, or skin-colored; some are very dark brown but may appear black. […] Location: Commonly on the trunk, scalp, neck, limbs, and sometimes the face. They do not affect the soles or palms. […] Texture: Can be waxy in appearance or rough and crusty. […] Raised or not: Can look as if stuck onto the skin, but some are flat. […] Size: Ranging from 1 millimeter (mm) to several centimeters in diameter. […] Shape: Usually round or oval. […] Sensation: Not painful but may itch or become irritated. […] Number: Ranging from one to hundreds of lesions. […] Growth: Lesions usually start as small, rough bumps and gradually get thicker and develop a warty surface. They grow slowly. […] Seborrheic keratosis lesions are rarely painful but can be annoying, depending on their position. […] It can be hard to tell the difference between seborrheic keratoses and skin cancer. For this reason, a person should visit a doctor if they notice a new lesion or if a lesion changes in any way.
#1 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#1 Seborrheic Keratosis: What Is It, Causes, Risks & Treatment
https://my.clevelandclinic.org/health/diseases/21721-seborrheic-keratosis
Seborrheic keratoses usually grow slowly and may develop their texture gradually over time. […] If many seborrheic keratoses erupt suddenly together, it might raise some concern. This unusual occurrence has sometimes been considered a sign of internal cancer. […] They usually don’t, but people sometimes report: Itching. Irritation from friction. Bleeding. […] For the most part, you don’t have to worry about your seborrheic keratosis. However, you should see your healthcare provider if you notice: You have a new, unidentified growth. It’s itching, irritated or bleeding. An old seborrheic keratosis changed its appearance. Many growths suddenly develop in a short period.
#1 Seborrheic Keratosis: Appearance, Causes, Treatment
https://www.healthline.com/health/seborrheic-keratosis
Seborrheic keratosis usually causes no symptoms. However, for some people it may: be itchy, become irritated, although it usually isn’t painful, catch on clothing, depending on its location. […] While seborrheic keratosis is not harmful and does not usually need treatment, it can look similar to melanoma, a serious type of skin cancer. […] Most of the time a seborrheic keratosis growth won’t return, but it’s possible to develop a new one on another part of your body.
#1 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
An irritated seborrhoeic keratosis is an inflamed, red and crusted lesion. It may give rise to eczematous dermatitis around the seborrhoeic keratosis. Dermatitis may also trigger new seborrhoeic keratoses to appear. […] Seborrhoeic keratoses tend to persist. From time to time, individual or multiple lesions may remit spontaneously or via the lichenoid keratosis mechanism.
#1 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is slow-growing and can become larger and thicker over time. […] Rapid growth and the emergence of multiple seborrheic keratoses can arise in several situations. […] Seborrheic keratoses are benign lesions and have an excellent overall prognosis. […] The primary reason for treating seborrheic keratosis is cosmetic. […] Depending on their location, these lesions can become irritated and cause pain and discomfort for the patient. […] A case report has been published describing the transformation of seborrheic keratosis into bowenoid actinic keratosis in a patient with rheumatoid arthritis who was treated with multiple immunosuppressants.
#2 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#2 Seborrheic keratoses causes, symptoms & treatment – TeleMed2U
https://www.telemed2u.com/dermatology/seborrheic-keratoses
Seborrheic keratosis starts as a small, rough bump. […] Surface slowly thickens, developing a raised or warty bump. […] Size ranges from a fraction of an inch to larger than a half-dollar. […] Shape is usually round or oval. […] Color can range from white to black; usually brown or tan. […] Look waxy and pasted on; may become scaly. […] Affects the chest, shoulders, back, stomach, scalp, face, neck and other parts; not on palms or soles. […] May itch, but it is not painful. […] People with dark skin tend to have multiple, small, dark growths around the eyes. […] Multiple growths are common. […] Contact your dermatologist or doctor if you develop any of these symptoms: Multiple new growths developing over a short time. […] Growths bleed, are easily irritated, or painful. […] Unusual color such as purple, blue or reddish-black. […] Borders are irregular. […] Changes in the skin including sores that dont heal, or growths that are rapidly growing.
#2 Seborrheic keratosis – Symptoms & causes – Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878
Seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#2 Seborrheic Keratosis | Cedars-Sinai
https://www.cedars-sinai.org/health-library/diseases-and-conditions/s/seborrheic-keratosis.html
A seborrheic keratosis is a noncancerous (benign) growth on the skin. Its color can range from white, tan, brown, or black. Most are raised and appear „stuck on” to the skin. They may look like warts. […] Seborrheic keratoses often appear on a persons chest, arms, back, or other areas. Theyre very common in people older than age 50, but younger adults can get them as well. With age, more and more people get one or more of these growths. […] The growths can: Be slightly raised from the surrounding skin, Be white or light tan in appearance, which may darken to brown or black, Have a waxy, pasted-on look, Look scaly or like a wart, Be well-defined from the surrounding skin, Not usually cause pain but may sometimes itch a little. […] They occur most often on the chest, belly, back, neck, arms, face, or other areas that are exposed to sun. You might have only one or up to hundreds of these growths. People tend to develop more of these growths as they age.
#2 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is slow-growing and can become larger and thicker over time. […] Rapid growth and the emergence of multiple seborrheic keratoses can arise in several situations. […] Seborrheic keratoses are benign lesions and have an excellent overall prognosis. […] The primary reason for treating seborrheic keratosis is cosmetic. […] Depending on their location, these lesions can become irritated and cause pain and discomfort for the patient. […] A case report has been published describing the transformation of seborrheic keratosis into bowenoid actinic keratosis in a patient with rheumatoid arthritis who was treated with multiple immunosuppressants.
#2 Seborrheic keratosis in the Dallas area | Dr. Ellen Turner
https://www.dermofficedallas.com/general-dermatology/seborrheic-keratosis/
In most cases, a seborrheic keratosis wonât cause any symptoms, but it may sometimes cause itching, irritation from friction, and bleeding. […] A seborrheic keratosis may also simply be unsightly to the patient, which can prompt a decision to have it removed. […] A seborrheic keratosis usually wonât go away on its own, so if youâre bothered by the way it looks or feels you can choose to have it removed. […] A seborrheic keratosis may grow quickly, turn black, itch, or bleed, making it difficult to distinguish from skin cancer. […] Although they may look like pre-cancerous growths, they are not pre-cancerous, are harmless, and do not increase the risk of skin cancer.
#2 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Most of the time, seborrheic keratosis won’t cause problems. But make an appointment if: It bothers you a lot or becomes irritated or inflamed; You notice lots of growths at once normally, they appear one or two at a time and increase in number; It seems to change or grow quickly; It bleeds and doesn’t heal; You suddenly have many growths, because it can be what’s known as a Leser-Trlat sign, which can signal different types of cancer (though this is very rare). […] Seborrheic keratosis treatment consists of removing the spots, which won’t go away on their own. […] Most seborrheic keratoses don’t return after they’re removed. But a new one can still appear somewhere else on your body. […] Seborrheic keratosis is a benign (noncancerous) condition that can look like a mole or wart. It’s caused by a buildup of skin cells and can happen anywhere on your body, but often appears on the face, neck, and back. You usually have them after the age of 40. If they itch or bother you, talk to your doctor about removal. […] No. Unlike some moles, seborrheic keratosis never turns cancerous. It’s a benign spot.
#2 Seborrheic Keratosis – EyeWiki
https://eyewiki.org/Seborrheic_Keratosis
Seborrheic keratoses are common slow growing lesions that can thicken over time. Physical irritation can occur based on their location and can include ocular surface irritation, mechanical ptosis, and catching on clothing. SK can closely resemble precancerous lesions, most commonly actinic keratosis. […] The prognosis of seborrheic keratosis is excellent. Recurrence rates of previously treated SK of the skin is not well defined. However, if the lesion continues to recur, a biopsy should be performed to assess for malignancy. Sudden eruption of multiple seborrheic keratoses, known as the sign of Leser-Trelat can be a poor prognostic sign due to its association with internal malignancy.
#2 Pathology Outlines – Seborrheic keratosis
https://www.pathologyoutlines.com/topic/skintumornonmelanocyticsk.html
Common, benign keratinocyte proliferation of middle aged and elderly […] Most common benign skin tumor […] Age > 50; incidence increases with age […] Clinical: waxy, brown slow growing papule […] Single or multiple […] Papules or plaques with a stuck on appearance (well demarcated edges) […] Brown-black or gray in color […] Waxy or greasy with cerebriform surface […] Slow growing […] Irritated / inflamed seborrheic keratosis can be irregular and ulcerated (mimics carcinoma) […] Leser-TrÃ©lat sign: Sudden appearance of multiple seborrheic keratoses, rapid increase in size, pruritic […] Benign […] Leser-TrÃ©lat sign may indicate underlying malignancy […] Seborrheic keratosis is a benign keratinocyte proliferation that lacks atypia and dysplasia. […] Sudden eruption of multiple seborrheic keratoses, the Leser-TrÃ©lat sign, is a paraneoplastic phenomenon. It is associated with underlying malignancy, most often colonic adenocarcinoma and should prompt a clinical workup to evaluate.
#2 Seborrheic keratosis – Symptoms, diagnosis and treatment | BMJ Best Practice US
https://bestpractice.bmj.com/topics/en-us/617
Seborrheic keratoses are common, multiple, benign tumors of the skin. […] They usually appear in the fourth and fifth decades of life and their prevalence increases with age and sun exposure. […] They appear as well-circumscribed „stuck-on” plaques or papules and may look like warts. […] They are usually asymptomatic but can become irritated and inflamed spontaneously or because of friction from clothing. […] Most important differential diagnosis, and of patient concern, is malignant melanoma. […] Key diagnostic factors include lesions that appear „stuck-on,” localization on torso or face, yellow or light- to dark-brown-colored lesions, slightly raised, flat surface lesions, wart-like texture, multiple lesions, painless, and itching (prurigo). […] Most lesions do not exceed 1 cm in diameter. […] The lesions are normally painless and require no treatment.
#3 Seborrheic keratosis – Symptoms & causes – Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878
Seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#3 Seborrheic Keratosis > Fact Sheets > Yale Medicine
https://www.yalemedicine.org/conditions/seborrheic-keratosis
Symptoms include a raised, oval or round spot on the skin that may bleed or be itchy. […] People with seborrheic keratosis may notice a spot or spots on their skin that: Look white, flesh-colored, yellow, pink, tan, brown, gray, or black; Are round or oval-shaped; Have a raised surface; Have a velvety- or waxy-looking surface; Have a rough- or crusty-looking texture; Have a surface texture similar to that of a wart; Appear in groups or clusters; Have a uniform appearance. […] Sometimes, the spots on the skin can also: Feel itchy; Become irritated; Appear red or inflamed; Bleed.
#3 Seborrheic keratoses causes, symptoms & treatment – TeleMed2U
https://www.telemed2u.com/dermatology/seborrheic-keratoses
Seborrheic keratosis starts as a small, rough bump. […] Surface slowly thickens, developing a raised or warty bump. […] Size ranges from a fraction of an inch to larger than a half-dollar. […] Shape is usually round or oval. […] Color can range from white to black; usually brown or tan. […] Look waxy and pasted on; may become scaly. […] Affects the chest, shoulders, back, stomach, scalp, face, neck and other parts; not on palms or soles. […] May itch, but it is not painful. […] People with dark skin tend to have multiple, small, dark growths around the eyes. […] Multiple growths are common. […] Contact your dermatologist or doctor if you develop any of these symptoms: Multiple new growths developing over a short time. […] Growths bleed, are easily irritated, or painful. […] Unusual color such as purple, blue or reddish-black. […] Borders are irregular. […] Changes in the skin including sores that dont heal, or growths that are rapidly growing.
#3 Seborrheic keratosis
https://johnsonmemorial.org/jmh-health/disease-conditions/con-20193998
A seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#3 Seborrheic Keratosis
https://healthlibrary.osfhealthcare.org/Library/DiseasesConditions/Adult/134,579
Seborrheic keratoses often appear on a persons chest, arms, back, or other areas. […] They occur most often on the chest, belly, back, neck, arms, face, or other areas that are exposed to sun. You might have only one or up to hundreds of these growths. People tend to develop more of these growths as they age. […] The growths can: Be slightly raised from the surrounding skin, Be white or light tan in appearance, which may darken to brown or black, Have a waxy, pasted-on look, Look scaly or like a wart, Be well-defined from the surrounding skin, Not usually cause pain but may sometimes itch a little.
#3 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is a common type of epidermal tumor that is prevalent in middle-aged and older individuals. These lesions are among the most common types of skin tumors seen by primary care physicians and dermatologists in an outpatient setting. […] Seborrheic keratosis is a prevalent benign skin condition made up of immature epidermal keratinocytes. The condition manifests in different forms, ranging from a faintly colored, superficial patch to a brown to black, scaly papule or plaque with a distinctive „stuck-on” appearance. […] Most patients typically observe their initial seborrheic keratosis during their middle adult years. They exhibit gradual growth in both size and quantity over several years. This condition becomes more common as individuals age, and it affects almost all adults who are 60 years of age or older.
#3 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
An irritated seborrhoeic keratosis is an inflamed, red and crusted lesion. It may give rise to eczematous dermatitis around the seborrhoeic keratosis. Dermatitis may also trigger new seborrhoeic keratoses to appear. […] Seborrhoeic keratoses tend to persist. From time to time, individual or multiple lesions may remit spontaneously or via the lichenoid keratosis mechanism.
#3 Seborrheic Keratosis: What Is It, Causes, Risks & Treatment
https://my.clevelandclinic.org/health/diseases/21721-seborrheic-keratosis
Seborrheic keratoses usually grow slowly and may develop their texture gradually over time. […] If many seborrheic keratoses erupt suddenly together, it might raise some concern. This unusual occurrence has sometimes been considered a sign of internal cancer. […] They usually don’t, but people sometimes report: Itching. Irritation from friction. Bleeding. […] For the most part, you don’t have to worry about your seborrheic keratosis. However, you should see your healthcare provider if you notice: You have a new, unidentified growth. It’s itching, irritated or bleeding. An old seborrheic keratosis changed its appearance. Many growths suddenly develop in a short period.
#3 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Most of the time, seborrheic keratosis won’t cause problems. But make an appointment if: It bothers you a lot or becomes irritated or inflamed; You notice lots of growths at once normally, they appear one or two at a time and increase in number; It seems to change or grow quickly; It bleeds and doesn’t heal; You suddenly have many growths, because it can be what’s known as a Leser-Trlat sign, which can signal different types of cancer (though this is very rare). […] Seborrheic keratosis treatment consists of removing the spots, which won’t go away on their own. […] Most seborrheic keratoses don’t return after they’re removed. But a new one can still appear somewhere else on your body. […] Seborrheic keratosis is a benign (noncancerous) condition that can look like a mole or wart. It’s caused by a buildup of skin cells and can happen anywhere on your body, but often appears on the face, neck, and back. You usually have them after the age of 40. If they itch or bother you, talk to your doctor about removal. […] No. Unlike some moles, seborrheic keratosis never turns cancerous. It’s a benign spot.
#3 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#3 Seborrheic Keratosis | CommonSpirit Health
https://www.commonspirit.org/conditions-treatments/seborrheic-keratosis
Seborrheic keratoses are common noncancerous (benign) skin growths that men and women develop as they age. They may appear as one growth or as a cluster of growths, most often on the chest or back and occasionally on the scalp, face, or neck. […] Seborrheic keratoses are usually brown, but the color can vary from pale white to brown to black. The size varies from very small to the size of a medium coin. These growths often look as though they have been pasted on. […] In general, seborrheic keratoses do not need treatment unless their appearance causes embarrassment or they become irritated by clothing. […] All skin growths, especially those that appear suddenly, grow quickly, develop symptoms like itching or bleeding, or change in shape or color, should be evaluated by a doctor to rule out cancer.
#4 Seborrheic keratosis – Symptoms & causes – Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878
Seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#4 Seborrheic Keratosis > Fact Sheets > Yale Medicine
https://www.yalemedicine.org/conditions/seborrheic-keratosis
Symptoms include a raised, oval or round spot on the skin that may bleed or be itchy. […] People with seborrheic keratosis may notice a spot or spots on their skin that: Look white, flesh-colored, yellow, pink, tan, brown, gray, or black; Are round or oval-shaped; Have a raised surface; Have a velvety- or waxy-looking surface; Have a rough- or crusty-looking texture; Have a surface texture similar to that of a wart; Appear in groups or clusters; Have a uniform appearance. […] Sometimes, the spots on the skin can also: Feel itchy; Become irritated; Appear red or inflamed; Bleed.
#4 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#4 Seborrheic Keratosis | Cedars-Sinai
https://www.cedars-sinai.org/health-library/diseases-and-conditions/s/seborrheic-keratosis.html
A seborrheic keratosis is a noncancerous (benign) growth on the skin. Its color can range from white, tan, brown, or black. Most are raised and appear „stuck on” to the skin. They may look like warts. […] Seborrheic keratoses often appear on a persons chest, arms, back, or other areas. Theyre very common in people older than age 50, but younger adults can get them as well. With age, more and more people get one or more of these growths. […] The growths can: Be slightly raised from the surrounding skin, Be white or light tan in appearance, which may darken to brown or black, Have a waxy, pasted-on look, Look scaly or like a wart, Be well-defined from the surrounding skin, Not usually cause pain but may sometimes itch a little. […] They occur most often on the chest, belly, back, neck, arms, face, or other areas that are exposed to sun. You might have only one or up to hundreds of these growths. People tend to develop more of these growths as they age.
#4 Seborrheic keratosis in the Dallas area | Dr. Ellen Turner
https://www.dermofficedallas.com/general-dermatology/seborrheic-keratosis/
A seborrheic keratosis (SK) or several seborrheic keratoses (SKs) are benign (non-cancerous), extremely common growths that can occur almost anywhere on the skin. […] Usually beginning as small, rough bumps, SKs tend to eventually thicken and develop a warty surface. […] A seborrheic keratosis looks similar to a common mole and has a round or oval shape. Typically, a seborrheic keratosis will begin as a small, rough area which then gets a thicker, wart-like, and waxy appearance. It may also have a slightly raised surface. […] While anyone may develop SKs, these growths generally first appear in middle age or later in life and occur more frequently as you get older. […] A seborrheic keratosis will sometimes be mistaken for a pre-cancerous growth, and they may look similar to melanoma, a type of skin cancer.
#4 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Seborrheic keratosis is a common, harmless growth on your skin. It’s benign, which means it isn’t cancerous. Like moles, seborrheic keratosis happens when extra skin cells bunch up together on the top layer of skin. It can appear later in life, after about age 40. It can show up anywhere except your palms and soles. Its most likely to happen on your face, scalp, chest, shoulders, belly, or back. […] Over time, seborrheic keratoses become scaly and thick, like melted candle wax stuck to your skin. They can grow to about 1 inch in width. You may have one spot, or they can grow in groups. Some people have hundreds on their bodies. […] It’s not painful, but it might itch. It can feel greasy, rough, or soft when you touch it. Inflamed seborrheic keratoses can rub against your clothes and get in the way of shaving and other things you do.
#4 Seborrheic Keratosis – EyeWiki
https://eyewiki.org/Seborrheic_Keratosis
Seborrheic keratosis (SK) is one of the most common skin tumors that is predominantly seen in adults. SK lesions are papules and/or plaques that have a predilection for the eyelid, forehead, and trunk; however, they can occur anywhere on the body with sparing of the palms and soles. Commonly, these lesions are beige, brown, or black and usually measure 3 to 20 mm in diameter. They often have a velvet or wart-like surface and appear to be „stuck on” the skin. […] Patients may note slow growth of these lesions, pain, pruritus, erythema, bleeding, or may have no symptoms at all. If many of these lesions appear at once, it may be a sign of gastrointestinal or pulmonary malignancy; this is known as the sign of Leser-Trelat. […] Pathology shows proliferation of keratinocytes with keratin-filled cysts. Hyperkeratosis, acanthosis, pseudocysts, hyperpigmentation, dyskeratosis, and lymphocytic infiltration (if inflamed) may also be seen. These lesions do not usually self resolve.
#4 Seborrheic Keratosis: Symptoms and Treatment | The Skin Surgery Center
https://www.skinsurgerycenter.net/conditions/seborrheic-keratosis
Seborrheic Keratosis, also known as seborrheic verruca, is a common and typically benign skin growth, often appearing as brown, black or yellow growths that grow singly or in groups and are flat or slightly elevated. Most people will develop at least one seborrheic keratosis during a lifetime. Although they do not pose a cancer risk, understanding their distinctive appearance is important. […] Seborrheic keratoses are generally harmless and do not turn into cancer. They are considered benign growths, and while they may look similar to certain skin cancers, they pose no cancer risk. […] While removal is often permanent, new growths may appear over time. Regular skin checks with a dermatologist are advisable to monitor any changes and address new developments.
#4 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/sites/books/NBK545285/
Seborrheic keratosis is the most common benign skin tumor, affecting over 80 million Americans. Individuals older than 50 years of age typically develop seborrheic keratosis, which becomes more pronounced as they age. […] Seborrheic keratoses frequently aggregate on the face, scalp, trunk, inframammary folds, arms, and legs. […] Seborrheic keratoses rarely manifest any symptoms. However, pruritus and/or mild pain may be associated with inflamed or irritated lesions, particularly those situated in skin folds or subject to persistent irritation from clothing friction. […] Generally, seborrheic keratosis is benign, and its lesions are slow-growing; however, there should be concern if there is sudden growth or emergence of multiple seborrheic keratoses. […] Rapid growth and the emergence of multiple seborrheic keratoses can arise in several situations. The Leser-Trelat sign involves the emergence of multiple seborrheic keratoses and is associated with underlying malignancies such as adenocarcinoma of the gastrointestinal tract, leukemia, and lymphoma.
#4 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is slow-growing and can become larger and thicker over time. […] Rapid growth and the emergence of multiple seborrheic keratoses can arise in several situations. […] Seborrheic keratoses are benign lesions and have an excellent overall prognosis. […] The primary reason for treating seborrheic keratosis is cosmetic. […] Depending on their location, these lesions can become irritated and cause pain and discomfort for the patient. […] A case report has been published describing the transformation of seborrheic keratosis into bowenoid actinic keratosis in a patient with rheumatoid arthritis who was treated with multiple immunosuppressants.
#5 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#5 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Seborrheic keratosis is a common, harmless growth on your skin. It’s benign, which means it isn’t cancerous. Like moles, seborrheic keratosis happens when extra skin cells bunch up together on the top layer of skin. It can appear later in life, after about age 40. It can show up anywhere except your palms and soles. Its most likely to happen on your face, scalp, chest, shoulders, belly, or back. […] Over time, seborrheic keratoses become scaly and thick, like melted candle wax stuck to your skin. They can grow to about 1 inch in width. You may have one spot, or they can grow in groups. Some people have hundreds on their bodies. […] It’s not painful, but it might itch. It can feel greasy, rough, or soft when you touch it. Inflamed seborrheic keratoses can rub against your clothes and get in the way of shaving and other things you do.
#5 Seborrheic Keratosis | Cedars-Sinai
https://www.cedars-sinai.org/health-library/diseases-and-conditions/s/seborrheic-keratosis.html
A seborrheic keratosis is a noncancerous (benign) growth on the skin. Its color can range from white, tan, brown, or black. Most are raised and appear „stuck on” to the skin. They may look like warts. […] Seborrheic keratoses often appear on a persons chest, arms, back, or other areas. Theyre very common in people older than age 50, but younger adults can get them as well. With age, more and more people get one or more of these growths. […] The growths can: Be slightly raised from the surrounding skin, Be white or light tan in appearance, which may darken to brown or black, Have a waxy, pasted-on look, Look scaly or like a wart, Be well-defined from the surrounding skin, Not usually cause pain but may sometimes itch a little. […] They occur most often on the chest, belly, back, neck, arms, face, or other areas that are exposed to sun. You might have only one or up to hundreds of these growths. People tend to develop more of these growths as they age.
#5 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is the most common benign skin tumor, affecting over 80 million Americans. Individuals older than 50 years of age typically develop seborrheic keratosis, which becomes more pronounced as they age. […] Seborrheic keratoses frequently aggregate on the face, scalp, trunk, inframammary folds, arms, and legs. […] Seborrheic keratoses rarely manifest any symptoms. However, pruritus and/or mild pain may be associated with inflamed or irritated lesions, particularly those situated in skin folds or subject to persistent irritation from clothing friction. […] Generally, seborrheic keratosis is benign, and its lesions are slow-growing; however, there should be concern if there is sudden growth or emergence of multiple seborrheic keratoses. […] Seborrheic keratosis is characterized by its unique appearance as a raised, scaly, brown-to-black papule firmly stuck to the skin.
#5 Seborrheic keratoses causes, symptoms & treatment – TeleMed2U
https://www.telemed2u.com/dermatology/seborrheic-keratoses
Seborrheic keratosis starts as a small, rough bump. […] Surface slowly thickens, developing a raised or warty bump. […] Size ranges from a fraction of an inch to larger than a half-dollar. […] Shape is usually round or oval. […] Color can range from white to black; usually brown or tan. […] Look waxy and pasted on; may become scaly. […] Affects the chest, shoulders, back, stomach, scalp, face, neck and other parts; not on palms or soles. […] May itch, but it is not painful. […] People with dark skin tend to have multiple, small, dark growths around the eyes. […] Multiple growths are common. […] Contact your dermatologist or doctor if you develop any of these symptoms: Multiple new growths developing over a short time. […] Growths bleed, are easily irritated, or painful. […] Unusual color such as purple, blue or reddish-black. […] Borders are irregular. […] Changes in the skin including sores that dont heal, or growths that are rapidly growing.
#5 Seborrheic keratosis | Health Library | Memorial Health System
https://www.mhsystem.org/health-library/con-20193998/
The peak time for developing seborrheic keratoses is after your 50s. Youre also more likely to have them if you have a family history of the condition. […] A seborrheic keratosis typically doesnt go away on its own, but treatment isnt needed. You might choose to have it removed if it becomes irritated or bleeds, or if you dont like how it looks or feels.
#5 Seborrheic Keratosis
https://fpnotebook.com/Derm/Hyperplasia/SbrhcKrts.htm
Typically asymptomatic […] Pruritus may occur.
#5 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
An irritated seborrhoeic keratosis is an inflamed, red and crusted lesion. It may give rise to eczematous dermatitis around the seborrhoeic keratosis. Dermatitis may also trigger new seborrhoeic keratoses to appear. […] Seborrhoeic keratoses tend to persist. From time to time, individual or multiple lesions may remit spontaneously or via the lichenoid keratosis mechanism.
#5 Pathology Outlines – Seborrheic keratosis
https://www.pathologyoutlines.com/topic/skintumornonmelanocyticsk.html
Common, benign keratinocyte proliferation of middle aged and elderly […] Most common benign skin tumor […] Age > 50; incidence increases with age […] Clinical: waxy, brown slow growing papule […] Single or multiple […] Papules or plaques with a stuck on appearance (well demarcated edges) […] Brown-black or gray in color […] Waxy or greasy with cerebriform surface […] Slow growing […] Irritated / inflamed seborrheic keratosis can be irregular and ulcerated (mimics carcinoma) […] Leser-TrÃ©lat sign: Sudden appearance of multiple seborrheic keratoses, rapid increase in size, pruritic […] Benign […] Leser-TrÃ©lat sign may indicate underlying malignancy […] Seborrheic keratosis is a benign keratinocyte proliferation that lacks atypia and dysplasia. […] Sudden eruption of multiple seborrheic keratoses, the Leser-TrÃ©lat sign, is a paraneoplastic phenomenon. It is associated with underlying malignancy, most often colonic adenocarcinoma and should prompt a clinical workup to evaluate.
#5 Seborrheic Keratosis: Appearance, Causes, Treatment
https://www.healthline.com/health/seborrheic-keratosis
Seborrheic keratosis usually causes no symptoms. However, for some people it may: be itchy, become irritated, although it usually isn’t painful, catch on clothing, depending on its location. […] While seborrheic keratosis is not harmful and does not usually need treatment, it can look similar to melanoma, a serious type of skin cancer. […] Most of the time a seborrheic keratosis growth won’t return, but it’s possible to develop a new one on another part of your body.
#5 Seborrheic Keratosis: What Is It, Causes, Risks & Treatment
https://my.clevelandclinic.org/health/diseases/21721-seborrheic-keratosis
Seborrheic keratoses usually grow slowly and may develop their texture gradually over time. […] If many seborrheic keratoses erupt suddenly together, it might raise some concern. This unusual occurrence has sometimes been considered a sign of internal cancer. […] They usually don’t, but people sometimes report: Itching. Irritation from friction. Bleeding. […] For the most part, you don’t have to worry about your seborrheic keratosis. However, you should see your healthcare provider if you notice: You have a new, unidentified growth. It’s itching, irritated or bleeding. An old seborrheic keratosis changed its appearance. Many growths suddenly develop in a short period.
#6 Seborrheic Keratosis | Cedars-Sinai
https://www.cedars-sinai.org/health-library/diseases-and-conditions/s/seborrheic-keratosis.html
A seborrheic keratosis is a noncancerous (benign) growth on the skin. Its color can range from white, tan, brown, or black. Most are raised and appear „stuck on” to the skin. They may look like warts. […] Seborrheic keratoses often appear on a persons chest, arms, back, or other areas. Theyre very common in people older than age 50, but younger adults can get them as well. With age, more and more people get one or more of these growths. […] The growths can: Be slightly raised from the surrounding skin, Be white or light tan in appearance, which may darken to brown or black, Have a waxy, pasted-on look, Look scaly or like a wart, Be well-defined from the surrounding skin, Not usually cause pain but may sometimes itch a little. […] They occur most often on the chest, belly, back, neck, arms, face, or other areas that are exposed to sun. You might have only one or up to hundreds of these growths. People tend to develop more of these growths as they age.
#6 Seborrhoeic Keratoses Treatment Reading – Causes & Symptoms | Derma
https://www.dermareading.co.uk/seborrhoeic-keratoses
Symptoms of Seborrhoeic Keratose […] Seborrhoeic keratoses are small, waxy, wart-like looking growths on the surface of the skin, that can be varied in colour (usually light tan, brown, or black) and in size, from about 2 millimetres to 2.5 centimetres. […] They are usually round, or oval-shaped, and they can have a scaly surface. […] While its possible to have only one seborrhoeic keratosis, usually people have multiple growths, and they commonly present on the face, chest, shoulders or back. […] They dont tend to be sore or painful unless they become traumatised, but they might itch, and they characteristically look as though they have been pasted on the skin. […] Seborrhoeic keratoses are not contagious. […] Experts say it is not exactly clear what causes seborrhoeic keratoses, but they seem to occur in people over 40, and almost all people at some point in their lives.
#6 Seborrheic Keratosis > Fact Sheets > Yale Medicine
https://www.yalemedicine.org/conditions/seborrheic-keratosis
Symptoms include a raised, oval or round spot on the skin that may bleed or be itchy. […] People with seborrheic keratosis may notice a spot or spots on their skin that: Look white, flesh-colored, yellow, pink, tan, brown, gray, or black; Are round or oval-shaped; Have a raised surface; Have a velvety- or waxy-looking surface; Have a rough- or crusty-looking texture; Have a surface texture similar to that of a wart; Appear in groups or clusters; Have a uniform appearance. […] Sometimes, the spots on the skin can also: Feel itchy; Become irritated; Appear red or inflamed; Bleed.
#6 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#6 Navigating Seborrheic Keratoses: From Diagnosis to Treatment
https://www.usdermatologypartners.com/blog/seborrheic-keratoses-identification-treatment/
Seborrheic keratoses growths tend to feel waxy. […] The growth can thicken over time, looking like a mole. […] Seborrheic keratosis can develop on almost any part of the body. […] However, it is most common on the scalp, face, and upper body. […] If you and your dermatologist decide that removing the seborrheic keratoses growths is the best option, there are several ways of treating seborrheic keratosis, including: […] Following any of these procedures, most people only see some lightening of the skin that clears up with time. […] The best thing you can do if you notice warning signs of early-stage seborrheic keratosis is to seek professional medical advice right away. […] New growths, especially if they develop quickly, can be intimidating, but itâs better to know exactly what youâre dealing with to alleviate any unnecessary stress.
#6 Seborrheic Keratosis – Trillium Clinic Dermatology Chapel Hill
https://trilliumclinic.com/dermatology/medical/seborrheic-keratosis/
The peak time for developing seborrheic keratoses is after your 50s. Youre also more likely to have them if you have a family history of the condition. […] Early diagnosis and appropriate management can help control symptoms, prevent complications, and improve quality of life for individuals with seborrheic keratosis.
#6 Seborrheic Keratosis: Appearance, Causes, Treatment
https://www.healthline.com/health/seborrheic-keratosis
Seborrheic keratosis usually causes no symptoms. However, for some people it may: be itchy, become irritated, although it usually isn’t painful, catch on clothing, depending on its location. […] While seborrheic keratosis is not harmful and does not usually need treatment, it can look similar to melanoma, a serious type of skin cancer. […] Most of the time a seborrheic keratosis growth won’t return, but it’s possible to develop a new one on another part of your body.
#6 Seborrheic keratosis in the Dallas area | Dr. Ellen Turner
https://www.dermofficedallas.com/general-dermatology/seborrheic-keratosis/
In most cases, a seborrheic keratosis wonât cause any symptoms, but it may sometimes cause itching, irritation from friction, and bleeding. […] A seborrheic keratosis may also simply be unsightly to the patient, which can prompt a decision to have it removed. […] A seborrheic keratosis usually wonât go away on its own, so if youâre bothered by the way it looks or feels you can choose to have it removed. […] A seborrheic keratosis may grow quickly, turn black, itch, or bleed, making it difficult to distinguish from skin cancer. […] Although they may look like pre-cancerous growths, they are not pre-cancerous, are harmless, and do not increase the risk of skin cancer.
#6 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Most of the time, seborrheic keratosis won’t cause problems. But make an appointment if: It bothers you a lot or becomes irritated or inflamed; You notice lots of growths at once normally, they appear one or two at a time and increase in number; It seems to change or grow quickly; It bleeds and doesn’t heal; You suddenly have many growths, because it can be what’s known as a Leser-Trlat sign, which can signal different types of cancer (though this is very rare). […] Seborrheic keratosis treatment consists of removing the spots, which won’t go away on their own. […] Most seborrheic keratoses don’t return after they’re removed. But a new one can still appear somewhere else on your body. […] Seborrheic keratosis is a benign (noncancerous) condition that can look like a mole or wart. It’s caused by a buildup of skin cells and can happen anywhere on your body, but often appears on the face, neck, and back. You usually have them after the age of 40. If they itch or bother you, talk to your doctor about removal. […] No. Unlike some moles, seborrheic keratosis never turns cancerous. It’s a benign spot.
#6 Seborrheic keratosis: Treatment, images, and symptoms
https://www.medicalnewstoday.com/articles/266748
Seborrheic keratoses may look like warts, moles, or skin cancer. […] They can have the following features: Color: Tan, brown, yellow, gray, or skin-colored; some are very dark brown but may appear black. […] Location: Commonly on the trunk, scalp, neck, limbs, and sometimes the face. They do not affect the soles or palms. […] Texture: Can be waxy in appearance or rough and crusty. […] Raised or not: Can look as if stuck onto the skin, but some are flat. […] Size: Ranging from 1 millimeter (mm) to several centimeters in diameter. […] Shape: Usually round or oval. […] Sensation: Not painful but may itch or become irritated. […] Number: Ranging from one to hundreds of lesions. […] Growth: Lesions usually start as small, rough bumps and gradually get thicker and develop a warty surface. They grow slowly. […] Seborrheic keratosis lesions are rarely painful but can be annoying, depending on their position. […] It can be hard to tell the difference between seborrheic keratoses and skin cancer. For this reason, a person should visit a doctor if they notice a new lesion or if a lesion changes in any way.
#6 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
An irritated seborrhoeic keratosis is an inflamed, red and crusted lesion. It may give rise to eczematous dermatitis around the seborrhoeic keratosis. Dermatitis may also trigger new seborrhoeic keratoses to appear. […] Seborrhoeic keratoses tend to persist. From time to time, individual or multiple lesions may remit spontaneously or via the lichenoid keratosis mechanism.
#7 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is the most common benign skin tumor, affecting over 80 million Americans. Individuals older than 50 years of age typically develop seborrheic keratosis, which becomes more pronounced as they age. […] Seborrheic keratoses frequently aggregate on the face, scalp, trunk, inframammary folds, arms, and legs. […] Seborrheic keratoses rarely manifest any symptoms. However, pruritus and/or mild pain may be associated with inflamed or irritated lesions, particularly those situated in skin folds or subject to persistent irritation from clothing friction. […] Generally, seborrheic keratosis is benign, and its lesions are slow-growing; however, there should be concern if there is sudden growth or emergence of multiple seborrheic keratoses. […] Seborrheic keratosis is characterized by its unique appearance as a raised, scaly, brown-to-black papule firmly stuck to the skin.
#7 Seborrheic keratosis – Symptoms & causes – Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878
Seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#7 Seborrheic keratoses causes, symptoms & treatment – TeleMed2U
https://www.telemed2u.com/dermatology/seborrheic-keratoses
Seborrheic keratosis starts as a small, rough bump. […] Surface slowly thickens, developing a raised or warty bump. […] Size ranges from a fraction of an inch to larger than a half-dollar. […] Shape is usually round or oval. […] Color can range from white to black; usually brown or tan. […] Look waxy and pasted on; may become scaly. […] Affects the chest, shoulders, back, stomach, scalp, face, neck and other parts; not on palms or soles. […] May itch, but it is not painful. […] People with dark skin tend to have multiple, small, dark growths around the eyes. […] Multiple growths are common. […] Contact your dermatologist or doctor if you develop any of these symptoms: Multiple new growths developing over a short time. […] Growths bleed, are easily irritated, or painful. […] Unusual color such as purple, blue or reddish-black. […] Borders are irregular. […] Changes in the skin including sores that dont heal, or growths that are rapidly growing.
#7 Seborrheic Keratosis: Symptoms, Treatment, and Removal
https://skinsight.com/skin-conditions/seborrheic-keratosis/
Seborrheic keratoses can occur anywhere on the body, except for the palms, soles, and mucous membranes (areas such as in the mouth or anus). They most commonly occur on the chest and back. Seborrheic keratoses do not go away on their own, and they do not become cancerous. […] They usually start as light brown or skin-colored, slightly raised areas, which can be round or oval and of varying size (usually smaller than a thumbnail, but sometimes much larger). As they grow thicker, seborrheic keratoses may become dark brown to almost black and appear to be stuck on to the surface of the skin. The surface may feel smooth or rough. In lighter skin colors, they may be pink or any shade of brown. In darker skin colors, they may be any shade of brown, purple, gray, or blackish.
#7 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is a common type of epidermal tumor that is prevalent in middle-aged and older individuals. These lesions are among the most common types of skin tumors seen by primary care physicians and dermatologists in an outpatient setting. […] Seborrheic keratosis is a prevalent benign skin condition made up of immature epidermal keratinocytes. The condition manifests in different forms, ranging from a faintly colored, superficial patch to a brown to black, scaly papule or plaque with a distinctive „stuck-on” appearance. […] Most patients typically observe their initial seborrheic keratosis during their middle adult years. They exhibit gradual growth in both size and quantity over several years. This condition becomes more common as individuals age, and it affects almost all adults who are 60 years of age or older.
#7 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#7 Seborrheic Keratosis Treatment | St. Louis | Mid-County Dermatology
https://www.midcountyderm.com/seborrheic-keratosis
However, in some cases, it can lead to itching or irritation, especially if it rubs against clothing or jewelry or get irritated by external factors like excessive sweating. […] Age also plays a significant role in the occurrence of seborrheic keratosis lesions. It is more commonly observed in older individuals, particularly those above the age of 40 or 50. […] While seborrheic keratoses are generally harmless and do not pose any significant health risks to patients, it’s important to differentiate them from malignant skin lesions or tumors. […] Symptoms of seborrheic keratosis include the appearance of brown or black growths on the skin that may have a waxy or scaly texture. These growths are usually painless but can become itchy or irritated in some cases. […] The outlook for seborrheic keratosis is generally positive, as it is a benign condition. However, new growths may appear over time, requiring further treatment. Regular self-examinations and routine check-ups with a dermatologist can help monitor any changes in the skin and ensure early detection of any potential issues.
#7 Seborrhoeic Warts: Causes, Images, and Treatment
https://patient.info/skin-conditions/warts-and-verrucas-leaflet/seborrhoeic-warts
Seborrhoeic warts tend first to appear around the age of 40. They can sometimes run in families. The actual cause of seborrhoeic warts is unknown. It can be common to develop several seborrhoeic warts as you become older. Also, as time goes by, each wart tends to grow slightly and become darker. They can occur anywhere on your body, other than on your palms or soles, and there may be multiple lesions. […] Seborrhoeic warts do not become cancerous and are benign, unless there is a sudden appearance of multiple seborrhoeic warts, which may be associated with various cancers (see Leser-Trlat sign above). […] Without treatment, they usually continue to grow and can become darker and more crusty. However, they do increase in size very slowly.
#7 Seborrheic keratosis in the Dallas area | Dr. Ellen Turner
https://www.dermofficedallas.com/general-dermatology/seborrheic-keratosis/
In most cases, a seborrheic keratosis wonât cause any symptoms, but it may sometimes cause itching, irritation from friction, and bleeding. […] A seborrheic keratosis may also simply be unsightly to the patient, which can prompt a decision to have it removed. […] A seborrheic keratosis usually wonât go away on its own, so if youâre bothered by the way it looks or feels you can choose to have it removed. […] A seborrheic keratosis may grow quickly, turn black, itch, or bleed, making it difficult to distinguish from skin cancer. […] Although they may look like pre-cancerous growths, they are not pre-cancerous, are harmless, and do not increase the risk of skin cancer.
#7
#7 Pathology Outlines – Seborrheic keratosis
https://www.pathologyoutlines.com/topic/skintumornonmelanocyticsk.html
Common, benign keratinocyte proliferation of middle aged and elderly […] Most common benign skin tumor […] Age > 50; incidence increases with age […] Clinical: waxy, brown slow growing papule […] Single or multiple […] Papules or plaques with a stuck on appearance (well demarcated edges) […] Brown-black or gray in color […] Waxy or greasy with cerebriform surface […] Slow growing […] Irritated / inflamed seborrheic keratosis can be irregular and ulcerated (mimics carcinoma) […] Leser-TrÃ©lat sign: Sudden appearance of multiple seborrheic keratoses, rapid increase in size, pruritic […] Benign […] Leser-TrÃ©lat sign may indicate underlying malignancy […] Seborrheic keratosis is a benign keratinocyte proliferation that lacks atypia and dysplasia. […] Sudden eruption of multiple seborrheic keratoses, the Leser-TrÃ©lat sign, is a paraneoplastic phenomenon. It is associated with underlying malignancy, most often colonic adenocarcinoma and should prompt a clinical workup to evaluate.
#8 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Seborrheic keratosis is a common, harmless growth on your skin. It’s benign, which means it isn’t cancerous. Like moles, seborrheic keratosis happens when extra skin cells bunch up together on the top layer of skin. It can appear later in life, after about age 40. It can show up anywhere except your palms and soles. Its most likely to happen on your face, scalp, chest, shoulders, belly, or back. […] Over time, seborrheic keratoses become scaly and thick, like melted candle wax stuck to your skin. They can grow to about 1 inch in width. You may have one spot, or they can grow in groups. Some people have hundreds on their bodies. […] It’s not painful, but it might itch. It can feel greasy, rough, or soft when you touch it. Inflamed seborrheic keratoses can rub against your clothes and get in the way of shaving and other things you do.
#8 Seborrheic keratosis – Symptoms & causes – Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878
Seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#8
#8 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is a common type of epidermal tumor that is prevalent in middle-aged and older individuals. These lesions are among the most common types of skin tumors seen by primary care physicians and dermatologists in an outpatient setting. […] Seborrheic keratosis is a prevalent benign skin condition made up of immature epidermal keratinocytes. The condition manifests in different forms, ranging from a faintly colored, superficial patch to a brown to black, scaly papule or plaque with a distinctive „stuck-on” appearance. […] Most patients typically observe their initial seborrheic keratosis during their middle adult years. They exhibit gradual growth in both size and quantity over several years. This condition becomes more common as individuals age, and it affects almost all adults who are 60 years of age or older.
#8 Seborrheic Keratosis > Fact Sheets > Yale Medicine
https://www.yalemedicine.org/conditions/seborrheic-keratosis
Symptoms include a raised, oval or round spot on the skin that may bleed or be itchy. […] People with seborrheic keratosis may notice a spot or spots on their skin that: Look white, flesh-colored, yellow, pink, tan, brown, gray, or black; Are round or oval-shaped; Have a raised surface; Have a velvety- or waxy-looking surface; Have a rough- or crusty-looking texture; Have a surface texture similar to that of a wart; Appear in groups or clusters; Have a uniform appearance. […] Sometimes, the spots on the skin can also: Feel itchy; Become irritated; Appear red or inflamed; Bleed.
#8 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Most of the time, seborrheic keratosis won’t cause problems. But make an appointment if: It bothers you a lot or becomes irritated or inflamed; You notice lots of growths at once normally, they appear one or two at a time and increase in number; It seems to change or grow quickly; It bleeds and doesn’t heal; You suddenly have many growths, because it can be what’s known as a Leser-Trlat sign, which can signal different types of cancer (though this is very rare). […] Seborrheic keratosis treatment consists of removing the spots, which won’t go away on their own. […] Most seborrheic keratoses don’t return after they’re removed. But a new one can still appear somewhere else on your body. […] Seborrheic keratosis is a benign (noncancerous) condition that can look like a mole or wart. It’s caused by a buildup of skin cells and can happen anywhere on your body, but often appears on the face, neck, and back. You usually have them after the age of 40. If they itch or bother you, talk to your doctor about removal. […] No. Unlike some moles, seborrheic keratosis never turns cancerous. It’s a benign spot.
#8 Can You Scratch or Pick Off A Seborrheic Keratosis?
https://www.emedicinehealth.com/can_you_pick_off_a_seborrheic_keratosis/article_em.htm
Seborrheic keratoses growth usually does not cause any symptoms. Most of the time they are an annoyance and patients may feel the lesions are unattractive looking. They may be sparse or numerous and commonly appear on the trunk, arms, and face and neck, but can occur on any part of the body. […] Sometimes lesions can become bothersome and may: Itch, Rub or catch on clothing, Become inflamed, If they are rubbed on too much or scratched, they may bleed. […] Seborrheic keratoses can be bothersome and many people may consider them unsightly. In extreme cases, this may cause depression or decreased socialization. Growths may itch and may rub or catch on clothing, becoming inflamed. Excessive rubbing or scratching may cause lesions to bleed, which can result in infection.
#9 Seborrheic Keratosis > Fact Sheets > Yale Medicine
https://www.yalemedicine.org/conditions/seborrheic-keratosis
Symptoms include a raised, oval or round spot on the skin that may bleed or be itchy. […] People with seborrheic keratosis may notice a spot or spots on their skin that: Look white, flesh-colored, yellow, pink, tan, brown, gray, or black; Are round or oval-shaped; Have a raised surface; Have a velvety- or waxy-looking surface; Have a rough- or crusty-looking texture; Have a surface texture similar to that of a wart; Appear in groups or clusters; Have a uniform appearance. […] Sometimes, the spots on the skin can also: Feel itchy; Become irritated; Appear red or inflamed; Bleed.
#9 Seborrheic keratoses causes, symptoms & treatment – TeleMed2U
https://www.telemed2u.com/dermatology/seborrheic-keratoses
Seborrheic keratosis starts as a small, rough bump. […] Surface slowly thickens, developing a raised or warty bump. […] Size ranges from a fraction of an inch to larger than a half-dollar. […] Shape is usually round or oval. […] Color can range from white to black; usually brown or tan. […] Look waxy and pasted on; may become scaly. […] Affects the chest, shoulders, back, stomach, scalp, face, neck and other parts; not on palms or soles. […] May itch, but it is not painful. […] People with dark skin tend to have multiple, small, dark growths around the eyes. […] Multiple growths are common. […] Contact your dermatologist or doctor if you develop any of these symptoms: Multiple new growths developing over a short time. […] Growths bleed, are easily irritated, or painful. […] Unusual color such as purple, blue or reddish-black. […] Borders are irregular. […] Changes in the skin including sores that dont heal, or growths that are rapidly growing.
#9 Seborrheic Keratosis: What Is It, Causes, Risks & Treatment
https://my.clevelandclinic.org/health/diseases/21721-seborrheic-keratosis
Seborrheic keratoses usually grow slowly and may develop their texture gradually over time. […] If many seborrheic keratoses erupt suddenly together, it might raise some concern. This unusual occurrence has sometimes been considered a sign of internal cancer. […] They usually don’t, but people sometimes report: Itching. Irritation from friction. Bleeding. […] For the most part, you don’t have to worry about your seborrheic keratosis. However, you should see your healthcare provider if you notice: You have a new, unidentified growth. It’s itching, irritated or bleeding. An old seborrheic keratosis changed its appearance. Many growths suddenly develop in a short period.
#9 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
Seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin ageing. Some people have hundreds of them. […] Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years. […] Seborrhoeic keratoses can arise on any area of skin, covered or uncovered, with the exception of palms and soles. They do not arise from mucous membranes. […] Seborrhoeic keratoses have a highly variable appearance. […] They appear to stick on to the skin surface like barnacles. […] Very rarely, eruptive seborrhoeic keratoses may denote an underlying internal malignancy, most often gastric adenocarcinoma.
#9 Seborrheic Keratosis: Appearance, Causes, Treatment
https://www.healthline.com/health/seborrheic-keratosis
Seborrheic keratosis usually causes no symptoms. However, for some people it may: be itchy, become irritated, although it usually isn’t painful, catch on clothing, depending on its location. […] While seborrheic keratosis is not harmful and does not usually need treatment, it can look similar to melanoma, a serious type of skin cancer. […] Most of the time a seborrheic keratosis growth won’t return, but it’s possible to develop a new one on another part of your body.
#9 Understanding Seborrheic Keratosis
https://healthlibrary.reading.towerhealth.org/HomeHealthyHolidays/3,90750
Call your healthcare provider right away if any of these occur: You develop a lot of seborrheic keratoses very quickly. You have a sore that doesn’t heal in a few weeks, or heals and then comes back. You have a mole or skin growth that is changing in size, shape, or color. You have a mole or skin growth that looks different on 1 side from the other. You have a mole or skin growth that is not the same color throughout. You have a mole or skin growth that bleeds.
#9 Seborrheic Keratosis – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK545285/
Seborrheic keratosis is slow-growing and can become larger and thicker over time. […] Rapid growth and the emergence of multiple seborrheic keratoses can arise in several situations. […] Seborrheic keratoses are benign lesions and have an excellent overall prognosis. […] The primary reason for treating seborrheic keratosis is cosmetic. […] Depending on their location, these lesions can become irritated and cause pain and discomfort for the patient. […] A case report has been published describing the transformation of seborrheic keratosis into bowenoid actinic keratosis in a patient with rheumatoid arthritis who was treated with multiple immunosuppressants.
#10 Seborrheic keratosis – Symptoms & causes – Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878
Seborrheic keratosis grows gradually. Signs and symptoms might include: […] A round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back […] A flat growth or a slightly raised bump with a scaly surface, with a characteristic „pasted on” look […] Varied size, from very small to more than 1 inch (2.5 centimeters) across […] Varied number, ranging from a single growth to multiple growths […] Very small growths clustered around the eyes or elsewhere on the face, sometimes called flesh moles or dermatosis papulosa nigra, common on Black or brown skin […] Varied in color, ranging from light tan to brown or black […] Itchiness.
#10 Seborrheic Keratosis | Cedars-Sinai
https://www.cedars-sinai.org/health-library/diseases-and-conditions/s/seborrheic-keratosis.html
A seborrheic keratosis is a noncancerous (benign) growth on the skin. Its color can range from white, tan, brown, or black. Most are raised and appear „stuck on” to the skin. They may look like warts. […] Seborrheic keratoses often appear on a persons chest, arms, back, or other areas. Theyre very common in people older than age 50, but younger adults can get them as well. With age, more and more people get one or more of these growths. […] The growths can: Be slightly raised from the surrounding skin, Be white or light tan in appearance, which may darken to brown or black, Have a waxy, pasted-on look, Look scaly or like a wart, Be well-defined from the surrounding skin, Not usually cause pain but may sometimes itch a little. […] They occur most often on the chest, belly, back, neck, arms, face, or other areas that are exposed to sun. You might have only one or up to hundreds of these growths. People tend to develop more of these growths as they age.
#10 Seborrhoeic keratoses (brown warts, basal cell papillomas, seborrheic keratosis)
https://dermnetnz.org/topics/seborrhoeic-keratosis
An irritated seborrhoeic keratosis is an inflamed, red and crusted lesion. It may give rise to eczematous dermatitis around the seborrhoeic keratosis. Dermatitis may also trigger new seborrhoeic keratoses to appear. […] Seborrhoeic keratoses tend to persist. From time to time, individual or multiple lesions may remit spontaneously or via the lichenoid keratosis mechanism.
#10 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Most of the time, seborrheic keratosis won’t cause problems. But make an appointment if: It bothers you a lot or becomes irritated or inflamed; You notice lots of growths at once normally, they appear one or two at a time and increase in number; It seems to change or grow quickly; It bleeds and doesn’t heal; You suddenly have many growths, because it can be what’s known as a Leser-Trlat sign, which can signal different types of cancer (though this is very rare). […] Seborrheic keratosis treatment consists of removing the spots, which won’t go away on their own. […] Most seborrheic keratoses don’t return after they’re removed. But a new one can still appear somewhere else on your body. […] Seborrheic keratosis is a benign (noncancerous) condition that can look like a mole or wart. It’s caused by a buildup of skin cells and can happen anywhere on your body, but often appears on the face, neck, and back. You usually have them after the age of 40. If they itch or bother you, talk to your doctor about removal. […] No. Unlike some moles, seborrheic keratosis never turns cancerous. It’s a benign spot.
#10 Seborrheic keratoses causes, symptoms & treatment – TeleMed2U
https://www.telemed2u.com/dermatology/seborrheic-keratoses
Seborrheic keratosis starts as a small, rough bump. […] Surface slowly thickens, developing a raised or warty bump. […] Size ranges from a fraction of an inch to larger than a half-dollar. […] Shape is usually round or oval. […] Color can range from white to black; usually brown or tan. […] Look waxy and pasted on; may become scaly. […] Affects the chest, shoulders, back, stomach, scalp, face, neck and other parts; not on palms or soles. […] May itch, but it is not painful. […] People with dark skin tend to have multiple, small, dark growths around the eyes. […] Multiple growths are common. […] Contact your dermatologist or doctor if you develop any of these symptoms: Multiple new growths developing over a short time. […] Growths bleed, are easily irritated, or painful. […] Unusual color such as purple, blue or reddish-black. […] Borders are irregular. […] Changes in the skin including sores that dont heal, or growths that are rapidly growing.
#10 Can You Scratch or Pick Off A Seborrheic Keratosis?
https://www.emedicinehealth.com/can_you_pick_off_a_seborrheic_keratosis/article_em.htm
Seborrheic keratoses growth usually does not cause any symptoms. Most of the time they are an annoyance and patients may feel the lesions are unattractive looking. They may be sparse or numerous and commonly appear on the trunk, arms, and face and neck, but can occur on any part of the body. […] Sometimes lesions can become bothersome and may: Itch, Rub or catch on clothing, Become inflamed, If they are rubbed on too much or scratched, they may bleed. […] Seborrheic keratoses can be bothersome and many people may consider them unsightly. In extreme cases, this may cause depression or decreased socialization. Growths may itch and may rub or catch on clothing, becoming inflamed. Excessive rubbing or scratching may cause lesions to bleed, which can result in infection.
#11 Seborrheic Keratosis > Fact Sheets > Yale Medicine
https://www.yalemedicine.org/conditions/seborrheic-keratosis
Symptoms include a raised, oval or round spot on the skin that may bleed or be itchy. […] People with seborrheic keratosis may notice a spot or spots on their skin that: Look white, flesh-colored, yellow, pink, tan, brown, gray, or black; Are round or oval-shaped; Have a raised surface; Have a velvety- or waxy-looking surface; Have a rough- or crusty-looking texture; Have a surface texture similar to that of a wart; Appear in groups or clusters; Have a uniform appearance. […] Sometimes, the spots on the skin can also: Feel itchy; Become irritated; Appear red or inflamed; Bleed.
#11 Seborrheic Keratosis
https://healthlibrary.osfhealthcare.org/Library/DiseasesConditions/Adult/134,579
Seborrheic keratoses often appear on a persons chest, arms, back, or other areas. […] They occur most often on the chest, belly, back, neck, arms, face, or other areas that are exposed to sun. You might have only one or up to hundreds of these growths. People tend to develop more of these growths as they age. […] The growths can: Be slightly raised from the surrounding skin, Be white or light tan in appearance, which may darken to brown or black, Have a waxy, pasted-on look, Look scaly or like a wart, Be well-defined from the surrounding skin, Not usually cause pain but may sometimes itch a little.
#11 Seborrheic keratosis: MedlinePlus Medical EncyclopediaLock
https://medlineplus.gov/ency/article/000884.htm
Seborrheic keratosis is a condition that causes colored growths on the skin that sometimes resemble warts. The growths are noncancerous (benign). […] Symptoms of seborrheic keratosis are skin growths that: Are located on the face, chest, shoulders, back, or other areas, except the lips, palms, and soles; Are painless, but may become irritated and itchy; Are most often tan, brown, or black; Have a slightly raised, flat surface; May have a rough texture (like a wart); Often have a waxy surface; Are round or oval; May look like a piece of bee’s wax that has been pasted-on the skin; Often appear in clusters. […] Growths usually do not return after they are removed. You may develop more growths in the future if you are prone to the condition.
#11 Seborrheic keratoses causes, symptoms & treatment – TeleMed2U
https://www.telemed2u.com/dermatology/seborrheic-keratoses
Seborrheic keratosis starts as a small, rough bump. […] Surface slowly thickens, developing a raised or warty bump. […] Size ranges from a fraction of an inch to larger than a half-dollar. […] Shape is usually round or oval. […] Color can range from white to black; usually brown or tan. […] Look waxy and pasted on; may become scaly. […] Affects the chest, shoulders, back, stomach, scalp, face, neck and other parts; not on palms or soles. […] May itch, but it is not painful. […] People with dark skin tend to have multiple, small, dark growths around the eyes. […] Multiple growths are common. […] Contact your dermatologist or doctor if you develop any of these symptoms: Multiple new growths developing over a short time. […] Growths bleed, are easily irritated, or painful. […] Unusual color such as purple, blue or reddish-black. […] Borders are irregular. […] Changes in the skin including sores that dont heal, or growths that are rapidly growing.
#12 Seborrheic Keratosis – Symptoms, Causes & Treatment
https://www.webmd.com/skin-problems-and-treatments/what-are-sebborheic-keratoses
Seborrheic keratosis is a common, harmless growth on your skin. It’s benign, which means it isn’t cancerous. Like moles, seborrheic keratosis happens when extra skin cells bunch up together on the top layer of skin. It can appear later in life, after about age 40. It can show up anywhere except your palms and soles. Its most likely to happen on your face, scalp, chest, shoulders, belly, or back. […] Over time, seborrheic keratoses become scaly and thick, like melted candle wax stuck to your skin. They can grow to about 1 inch in width. You may have one spot, or they can grow in groups. Some people have hundreds on their bodies. […] It’s not painful, but it might itch. It can feel greasy, rough, or soft when you touch it. Inflamed seborrheic keratoses can rub against your clothes and get in the way of shaving and other things you do.
#12
#12 Seborrheic Keratosis | CommonSpirit Health
https://www.commonspirit.org/conditions-treatments/seborrheic-keratosis
If you see a change in a skin growth, contact your doctor. Look for: A mole that bleeds. A fast-growing mole. A scaly or crusted growth on the skin. A sore that will not heal. […] Call your doctor now or seek immediate medical care if: You have an area of normal skin that suddenly changes in shape, size, or how it looks. Your skin is badly broken from scratching. You have signs of infection such as: Pain, warmth, or swelling in your skin. Red streaks near a wound in your skin. Pus coming from a wound in your skin. A fever not due to the flu or other illness. […] Watch closely for changes in your health, and be sure to contact your doctor if: You do not get better as expected.
#13 Seborrheic Keratosis Treatment: Three Removal Options
https://www.riverchasedermatology.com/service/seborrheic-keratosis/
Seborrheic keratoses start as small, rough, round or oval bumps. They are usually light tan or brown, though they can be closer to white, black, yellow or gray. Some look like candle wax dripped on the skin. They can grow to the size of a pencil eraser, the size quarter or larger. They may eventually thicken and develop a warty or crusty surface. […] Seborrheic keratoses are rarely painful, but they can itch. If one develops in an area where clothing or jewelry rubs against it, it can become irritated and bleed.