Łupież piersiowy
Etiologia i przyczyny

Łupież piersiowy (seborrheic dermatitis infantilis) jest powszechnym schorzeniem dermatologicznym u niemowląt, dotykającym do 10% dzieci poniżej 1. miesiąca życia, z maksymalną częstością występowania około 3. miesiąca życia (do 70%). Patogeneza jest wieloczynnikowa, obejmująca nadaktywność gruczołów łojowych stymulowaną przez hormony matczyne (androgeny przekazane prenatalnie), co prowadzi do nadprodukcji sebum i zaburzenia złuszczania naskórka. Istotną rolę odgrywa również kolonizacja skóry drożdżakami Malassezia (zwłaszcza M. globosa i M. restricta), które metabolizują sebum, generując nienasycone kwasy tłuszczowe wywołujące stan zapalny i łuszczenie. W patogenezie uwzględnia się także predyspozycje genetyczne, zaburzenia układu odpornościowego oraz czynniki środowiskowe, takie jak warunki klimatyczne, stosowanie agresywnych środków myjących czy antybiotykoterapia w okresie okołoporodowym, która może zaburzać mikroflorę skóry i przewodu pokarmowego.

Etiologia łupieżu piersiowego

Łupież piersiowy (ang. cradle cap), znany również jako łojotokowe zapalenie skóry niemowląt (łac. seborrheic dermatitis infantilis), stanowi częsty problem dermatologiczny dotykający nawet 10% niemowląt poniżej 1. miesiąca życia. Częstość występowania osiąga szczyt około 3. miesiąca życia, gdy dotyczy nawet 70% niemowląt, a następnie stopniowo zmniejsza się w kolejnych miesiącach, występując u około 7% dzieci w wieku 1-2 lat.12

Dokładna przyczyna łupieżu piersiowego pozostaje nieznana, jednak badacze wskazują na kilka czynników potencjalnie odpowiedzialnych za rozwój tego schorzenia. Należy podkreślić, że łupież piersiowy nie jest wywołany przez alergie, zakażenia bakteryjne ani niedostateczną higienę.34

Nadaktywność gruczołów łojowych

Jedną z głównych teorii dotyczących rozwoju łupieżu piersiowego jest nadaktywność gruczołów łojowych (sebaceous glands), które produkują sebum – substancję o konsystencji oleistej. Za najbardziej prawdopodobną przyczynę tej nadaktywności uważa się wpływ hormonów matczynych przekazanych dziecku podczas ciąży.56

Hormony androgenne przekazane przez matkę dziecku przed porodem powodują nadmierną produkcję sebum przez gruczoły łojowe skóry głowy niemowlęcia. Nadmiar sebum prowadzi do zaburzenia naturalnego procesu złuszczania naskórka – martwe komórki naskórka (korneocyty) zamiast ulegać normalnemu złuszczaniu, przylegają do skóry głowy tworząc charakterystyczne żółtawe łuski.78

Gruczoły łojowe niemowląt są aktywne przy urodzeniu, ponieważ dziecko przebywało w łonie matki. Około 3. miesiąca życia gruczoły te stają się nieaktywne aż do okresu dojrzewania, co może tłumaczyć, dlaczego łupież piersiowy najczęściej występuje w pierwszych miesiącach życia.910

Rola drożdżaków Malassezia

Drugim istotnym czynnikiem potencjalnie przyczyniającym się do rozwoju łupieżu piersiowego jest obecność drożdżaków z rodzaju Malassezia na skórze niemowlęcia.11 Drożdżaki te naturalnie występują na skórze każdego człowieka, jednak w sprzyjających warunkach (takich jak nadmiar sebum) mogą nadmiernie się namnażać.12

Szczególnie dwa gatunki – Malassezia globosa i Malassezia restricta – zostały zidentyfikowane u ponad 80% pacjentów dermatologicznych w różnym wieku.13 Te drożdżaki rozkładają sebum, zużywając nasycone kwasy tłuszczowe i pozostawiając nienasycone kwasy tłuszczowe, które mogą przyczyniać się do rozwoju stanu zapalnego i łuszczenia się skóry.14

Hipotezę o udziale drożdżaków Malassezia w patogenezie łupieżu piersiowego wspiera skuteczność leków przeciwgrzybiczych w leczeniu tego schorzenia. Jednak fakt, że drożdżaki te występują również licznie u osób bez objawów łupieżu piersiowego, sugeruje istnienie dodatkowej, indywidualnej podatności na ich działanie.1516

Czynniki genetyczne i immunologiczne

Badania wskazują na możliwy związek między łupieżem piersiowym a predyspozycjami genetycznymi. Zaobserwowano, że niemowlęta z łupieżem piersiowym często mają członków rodziny cierpiących na choroby o podłożu alergicznym, takie jak egzema (atopowe zapalenie skóry) czy astma.1718

W niektórych przypadkach łupież piersiowy może być związany z zaburzeniami układu odpornościowego. Ciężki łupież piersiowy może korelować z chorobami powodującymi obniżenie odporności (immunodeficyt).19 U niemowląt z bardziej nasilonym i rozległym łojotokowym zapaleniem skóry, częściej w późniejszym okresie rozwija się atopowe zapalenie skóry.20

Reakcja zapalna może być również wynikiem nadmiernej odpowiedzi immunologicznej na obecność drożdżaków Malassezia na skórze głowy niemowlęcia.21 Ta nadmierna reakcja może prowadzić do stanu zapalnego manifestującego się klinicznie jako łupież piersiowy.

Czynniki środowiskowe

Wpływ na rozwój i nasilenie łupieżu piersiowego mogą mieć również czynniki środowiskowe, takie jak:2223

  • Warunki klimatyczne – suche powietrze lub ekstremalne temperatury
  • Zmiany temperatury
  • Stosowanie agresywnych szamponów usuwających naturalne oleje ze skóry
  • Stres

2425

Antybiotykoterapia i zaburzenia mikrobioty

Stosowanie antybiotyków może przyczyniać się do rozwoju łupieżu piersiowego. Jeśli matka przyjmowała antybiotyki przed porodem lub niemowlę otrzymało je w pierwszym tygodniu życia, mogło dojść do zniszczenia nie tylko szkodliwych bakterii, ale również pożytecznych mikroorganizmów zapobiegających zakażeniom grzybiczym.26

Zaburzenia równowagi mikroflory skóry i przewodu pokarmowego mogą sprzyjać nadmiernemu namnażaniu się drożdżaków Malassezia oraz innych mikroorganizmów, takich jak Staphylococcus aureus, co może prowadzić do stanu zapalnego i osłabienia bariery ochronnej skóry.2728

Niedobory żywieniowe

Niektóre źródła sugerują, że niedobory określonych składników odżywczych mogą przyczyniać się do rozwoju łupieżu piersiowego. Wymienia się wśród nich niedobory:29

  • Biotyny
  • Cynku
  • Witaminy B6
  • Selenu
  • Manganu

30

Należy jednak podkreślić, że brak jest silnych dowodów naukowych potwierdzających bezpośredni związek między tymi niedoborami a łupieżem piersiowym u niemowląt.

Podsumowanie czynników etiologicznych

Łupież piersiowy jest najprawdopodobniej wynikiem złożonej interakcji kilku czynników, wśród których kluczową rolę odgrywają:3132

  1. Nadaktywność gruczołów łojowych stymulowana przez hormony matczyne
  2. Kolonizacja skóry przez drożdżaki z rodzaju Malassezia
  3. Predyspozycje genetyczne
  4. Zaburzenia mikrobioty skóry
  5. Czynniki środowiskowe

3334

Warto podkreślić, że mimo nieprzyjemnego wyglądu, łupież piersiowy jest schorzeniem łagodnym, niezakaźnym, niewynikającym z niedostatecznej higieny i zazwyczaj samoistnie ustępującym w ciągu kilku miesięcy.3536 W większości przypadków nie wymaga agresywnego leczenia, a jedynie delikatnej pielęgnacji, choć w przypadkach bardziej nasilonych pomocne mogą okazać się specjalistyczne preparaty przeciwgrzybicze lub przeciwzapalne.3738

Kolejne rozdziały

Zapraszamy do dalszego czytania naszego leksykonu.

Wybierz kolejny rozdział z menu poniżej, aby otworzyć nową podstronę kompedium wiedzy i uzyskać szczegółowe informację o leku, substancji lub chorobie.

  1. 11.04.2026
  2. www.leksykon.com.pl

Materiały źródłowe

  • #1 Cradle cap and seborrheic dermatitis in infants – UpToDate
    https://www.uptodate.com/contents/cradle-cap-and-seborrheic-dermatitis-in-infants
    Seborrheic dermatitis occurs in infants between the ages of 3 weeks and 12 months. It has been reported in approximately 10 percent of infants younger than one month. The prevalence peaks at the age of three months (approximately 70 percent) and decreases steadily in the following months, affecting approximately 7 percent of children aged one to two years. […] The pathogenesis of infantile seborrheic dermatitis is not known. Transplacental transfer of maternal androgens stimulates the growth of the infant’s sebaceous glands, which are necessary but not sufficient for the development of seborrheic dermatitis. The role of Malassezia, a lipid-dependent yeast, is not clear. Malassezia colonization has been reported in infants with seborrheic dermatitis, infants with other dermatologic conditions, and in normal infants.
  • #2 Cradle Cap in Babies: Symptoms, Causes, and Natural Home Remedies
    https://www.tinyhealth.com/blog/cradle-cap-symptoms-causes-remedies
    Cradle cap, or infantile seborrheic dermatitis, is a common condition that affects about 10% of babies under a month old, then peaks around three months, affecting up to 70% of infants. […] The exact cause of cradle cap isn’t fully understood, but several factors may contribute. Your baby’s oil glands may produce too much oil (sebum), which can cause skin cells to stick to their scalp instead of shedding naturally. This extra oil may result from hormones passed from mom to baby, or other factors like dry air, temperature changes, or harsh skincare products that strip natural oils from the skin. […] Other causes may include issues with the skin’s protective barrier, changes in the amount or type of natural skin oils, an overactive immune response, and an imbalance in the skin’s natural bacteria and yeast.
  • #3 Cradle cap: Treatment, causes, and prevention
    https://www.medicalnewstoday.com/articles/218942
    Cradle cap is a greasy, yellowish, scaly rash that appears in patches on the scalps of infants. It is not clear what causes cradle cap, but it may stem from overactive sebaceous glands, a fungal infection, or both. […] It is not clear what causes cradle cap, but it is not caused by allergy, bacterial infection, or bad hygiene. It may stem from overactive sebaceous glands, a fungal infection, or both. The sebaceous glands are found in the skin and produce an oil-like substance, known as sebum. Overactive sebaceous glands may produce too much sebum, and this could prevent the old skin cells from drying and falling off the scalp. Instead, they stick to the scalp. […] The reason why the glands are overactive may be because the mothers hormones stay in the babys body for a number of months after birth. If a fungal infection occurs, it could be the result of the mother taking antibiotics before giving birth, or because the baby was given them up to a week after birth. Antibiotics destroy bacteria that cause damage, but they can also destroy the useful bacteria that prevent things like fungal infection. […] Studies have indicated shown that babies who have cradle cap often have a family member with conditions such as eczema and asthma.
  • #4 Cradle Cap Types, Causes, Symptoms & Treatment – Urban Skin and Hair Clinic
    https://urbanskinhairclinic.com/cradle-cap/
    Cradle cap, also known as infantile seborrheic dermatitis, is a common skin condition that often affects infants. The exact cause of cradle cap is not fully understood, but it is believed to be related to the overproduction of oil (sebum) in the sebaceous glands of the skin and the presence of a yeast called Malassezia. […] The exact cause of cradle cap is not fully understood, but it is believed to be a combination of factors contributing to the condition. Some of the primary causes and contributing factors of cradle cap include: […] Overactive Sebaceous Glands: In newborns and infants, the sebaceous glands, which produce the skin’s natural oils (sebum), can be overly active. This excessive production of sebum can lead to the formation of greasy and oily scales on the baby’s scalp. […] Hormonal Influence: Hormones passed from the mother to the baby during pregnancy may play a role in stimulating the sebaceous glands, contributing to cradle cap development.
  • #5 Cradle cap | Better Health Channel
    https://www.betterhealth.vic.gov.au/health/healthyliving/cradle-cap
    Cradle cap is an inflammatory skin condition that affects babies. It causes yellow crusts on the scalp. It is commonly present in the first three months of life, and is rare after the age of one year. It is a form of seborrhoeic dermatitis. […] Sebaceous glands in the scalp make sebum, which oils the skin. It is thought that babies have high levels of maternal hormones in their bodies for several weeks or months following birth and these hormones enlarge the glands, making more sebum. Some component in the sebum, as yet unknown, causes skin inflammation. […] The cradle cap can come back, even when treated properly, because the glands continue to produce sebum for several months after birth.
  • #6 Cradle Cap
    https://www.seattlechildrens.org/conditions/a-z/cradle-cap/
    Cradle cap is probably caused by hormones from the mother. These hormones cross the placenta before birth. The hormones cause the oil glands in the skin to become overactive. They then release more oil than normal. […] Dead skin cells normally fall off. The extra oil causes these cells to „stick” to the skin. These cells form yellow crusts and scales on the scalp. […] It’s caused by overactive oil glands in the scalp.
  • #7 Cradle Cap – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK531463/
    Cradle cap, or pityriasis capitis, is a subset of infantile seborrheic dermatitis (ISD). Currently, there is no known cause for cradle cap. However, there are many factors that have been hypothesized to influence the condition. One hypothesis is the secondary influence of maternal circulating hormones resulting in overactive sebaceous gland activity. Sebaceous glands produce sebum, which is an oil-like substance. Overproduction of sebum causes the dead corneocytes (scale) to remain adherent instead of undergoing normal desquamation. Furthermore, the increase in frequency of seborrheic dermatitis during infancy and adolescence supports a hormonal influence on the condition. Malassezia, a yeast, has been implicated in many cases of cradle cap. The yeast breaks down sebum, consuming the saturated fatty acids, and subsequently leaves the unsaturated fatty acids behind. M. globosa and M. restricta have been found in over 80% of all age cases in an outpatient dermatology setting. The response from anti-fungals further strengthens this causal relationship. However, the yeast is also seen in a large quantity of normal patients, suggesting an independent susceptibility to the yeast. […] Prevention of cradle cap is difficult, secondary to the unknown cause of the condition, yet many believe hormones play a strong role.
  • #8 Cradle cap
    https://www.rch.org.au/kidsinfo/fact_sheets/Cradle_Cap/
    Cradle cap is a form of dermatitis that causes inflammation of the oil glands in the skin, which are called the sebaceous glands. The type of dermatitis is called seborrhoeic dermatitis. […] Babies are born with active sebaceous glands because they have been living in their mother’s womb. Once a baby is about three months old, the sebaceous glands become inactive until puberty.
  • #9 Cradle cap
    https://www.rch.org.au/kidsinfo/fact_sheets/Cradle_Cap/
    Cradle cap is a form of dermatitis that causes inflammation of the oil glands in the skin, which are called the sebaceous glands. The type of dermatitis is called seborrhoeic dermatitis. […] Babies are born with active sebaceous glands because they have been living in their mother’s womb. Once a baby is about three months old, the sebaceous glands become inactive until puberty.
  • #10 Azthena logo with the word Azthena
    https://www.news-medical.net/health/Cradle-Cap-Causes-and-Symptoms.aspx
    Cradle cap is the infant version of dandruff. In other words, it is a form of skin inflammation in reaction to certain components of sebum. […] The production and release of sebum are exaggerated in some babies because of the high levels of sebum-stimulating hormones in their blood, passed from the mother during pregnancy. For this reason cradle cap is medically termed seborrheic dermatitis. […] In contrast to popular thinking, cradle cap is not caused by an allergy or infection. Its appearance, notwithstanding, is not due to low standards of hygiene in baby care either. The best-cared for baby may develop a bad case of cradle cap if the sebum glands are overactive.
  • #11 Cradle Cap – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK531463/
    Cradle cap, or pityriasis capitis, is a subset of infantile seborrheic dermatitis (ISD). Currently, there is no known cause for cradle cap. However, there are many factors that have been hypothesized to influence the condition. One hypothesis is the secondary influence of maternal circulating hormones resulting in overactive sebaceous gland activity. Sebaceous glands produce sebum, which is an oil-like substance. Overproduction of sebum causes the dead corneocytes (scale) to remain adherent instead of undergoing normal desquamation. Furthermore, the increase in frequency of seborrheic dermatitis during infancy and adolescence supports a hormonal influence on the condition. Malassezia, a yeast, has been implicated in many cases of cradle cap. The yeast breaks down sebum, consuming the saturated fatty acids, and subsequently leaves the unsaturated fatty acids behind. M. globosa and M. restricta have been found in over 80% of all age cases in an outpatient dermatology setting. The response from anti-fungals further strengthens this causal relationship. However, the yeast is also seen in a large quantity of normal patients, suggesting an independent susceptibility to the yeast. […] Prevention of cradle cap is difficult, secondary to the unknown cause of the condition, yet many believe hormones play a strong role.
  • #12 The causes of cradle cap | Ducray
    https://www.ducray.com/en/cradle-cap/causes
    The exact origin of cradle cap is still unknown to this day. […] It is not clear why some children develop it and others do not. […] And, although it is sometimes referred to as cradle cap, nutrition and in particular breastfeeding (…) are not linked to the condition. […] Among the causes of cradle cap onset, excess sebum is the first. […] This excess of sebum is partly due to the mother’s hormones transmitted at the end of pregnancy. […] An environment rich in sebum promotes the proliferation of yeasts of the Malassezia genus. […] These yeasts, harmless in normal proportions, become pathogenic when they are present in large numbers.
  • #13 Cradle Cap – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK531463/
    Cradle cap, or pityriasis capitis, is a subset of infantile seborrheic dermatitis (ISD). Currently, there is no known cause for cradle cap. However, there are many factors that have been hypothesized to influence the condition. One hypothesis is the secondary influence of maternal circulating hormones resulting in overactive sebaceous gland activity. Sebaceous glands produce sebum, which is an oil-like substance. Overproduction of sebum causes the dead corneocytes (scale) to remain adherent instead of undergoing normal desquamation. Furthermore, the increase in frequency of seborrheic dermatitis during infancy and adolescence supports a hormonal influence on the condition. Malassezia, a yeast, has been implicated in many cases of cradle cap. The yeast breaks down sebum, consuming the saturated fatty acids, and subsequently leaves the unsaturated fatty acids behind. M. globosa and M. restricta have been found in over 80% of all age cases in an outpatient dermatology setting. The response from anti-fungals further strengthens this causal relationship. However, the yeast is also seen in a large quantity of normal patients, suggesting an independent susceptibility to the yeast. […] Prevention of cradle cap is difficult, secondary to the unknown cause of the condition, yet many believe hormones play a strong role.
  • #14 Cradle Cap in Babies: Symptoms, Causes, and Natural Home Remedies
    https://www.tinyhealth.com/blog/cradle-cap-symptoms-causes-remedies
    When this natural balance is disrupted, it can lead to overgrowth of certain microbes like Malassezia (a common yeast) and Staphylococcus aureus (a type of bacteria). This may trigger inflammation and weaken the skin’s protective barrier. […] Specific strains like Malassezia restricta and M. globosa break down skin oils to release fatty acid byproducts. These byproducts can irritate the skin, causing inflammation and flaking, which may lead to cradle cap.
  • #15 Cradle Cap – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK531463/
    Cradle cap, or pityriasis capitis, is a subset of infantile seborrheic dermatitis (ISD). Currently, there is no known cause for cradle cap. However, there are many factors that have been hypothesized to influence the condition. One hypothesis is the secondary influence of maternal circulating hormones resulting in overactive sebaceous gland activity. Sebaceous glands produce sebum, which is an oil-like substance. Overproduction of sebum causes the dead corneocytes (scale) to remain adherent instead of undergoing normal desquamation. Furthermore, the increase in frequency of seborrheic dermatitis during infancy and adolescence supports a hormonal influence on the condition. Malassezia, a yeast, has been implicated in many cases of cradle cap. The yeast breaks down sebum, consuming the saturated fatty acids, and subsequently leaves the unsaturated fatty acids behind. M. globosa and M. restricta have been found in over 80% of all age cases in an outpatient dermatology setting. The response from anti-fungals further strengthens this causal relationship. However, the yeast is also seen in a large quantity of normal patients, suggesting an independent susceptibility to the yeast. […] Prevention of cradle cap is difficult, secondary to the unknown cause of the condition, yet many believe hormones play a strong role.
  • #16 Cradle cap | UM Health-Sparrow
    https://www.uofmhealthsparrow.org/departments-conditions/conditions/cradle-cap
    Cradle cap causes crusty or oily scaly patches on a baby’s scalp. […] The cause of cradle cap isn’t known. One factor may be hormones that pass from the mother to the baby before birth. These hormones can cause oil glands and hair follicles to make too much oil. This oil is called sebum. […] Another factor may be a fungus called malassezia (mal-uh-SEE-zhuh) that grows in the sebum along with bacteria. Antifungal treatments often help control symptoms. This supports the idea that malassezia is a cause. An example of an antifungal treatment is ketoconazole. […] Cradle cap isn’t contagious, and it’s not caused by poor hygiene.
  • #17 Cradle cap: Treatment, causes, and prevention
    https://www.medicalnewstoday.com/articles/218942
    Cradle cap is a greasy, yellowish, scaly rash that appears in patches on the scalps of infants. It is not clear what causes cradle cap, but it may stem from overactive sebaceous glands, a fungal infection, or both. […] It is not clear what causes cradle cap, but it is not caused by allergy, bacterial infection, or bad hygiene. It may stem from overactive sebaceous glands, a fungal infection, or both. The sebaceous glands are found in the skin and produce an oil-like substance, known as sebum. Overactive sebaceous glands may produce too much sebum, and this could prevent the old skin cells from drying and falling off the scalp. Instead, they stick to the scalp. […] The reason why the glands are overactive may be because the mothers hormones stay in the babys body for a number of months after birth. If a fungal infection occurs, it could be the result of the mother taking antibiotics before giving birth, or because the baby was given them up to a week after birth. Antibiotics destroy bacteria that cause damage, but they can also destroy the useful bacteria that prevent things like fungal infection. […] Studies have indicated shown that babies who have cradle cap often have a family member with conditions such as eczema and asthma.
  • #18 Seborrhoeic dermatitis & cradle cap in infants – National Eczema Society
    https://eczema.org/information-and-advice/types-of-eczema/seborrhoeic-dermatitis-cradle-cap-in-infants/
    Infantile seborrhoeic dermatitis (also known as seborrhoeic eczema) is a common skin condition seen in infants, which appears before the age of 3 months and usually resolves by 6-12 months. […] The exact cause of infantile seborrhoeic dermatitis is unknown. It is believed to be caused by the overproduction of oil-producing sebaceous glands on the babys scalp. Malassezia yeasts are also indicated in this condition, although their exact role is not clear. […] A family history of eczema or other skin conditions does not seem to be of great significance, although some babies with seborrhoeic dermatitis will also develop atopic eczema, especially if seborrhoeic dermatitis is more severe and extensive.
  • #19 Cradle Cap: Causes, Symptoms, and Treatment – Skinsight
    https://skinsight.com/skin-conditions/cradle-cap/
    Cradle cap is the common name for seborrheic dermatitis affecting the scalp of newborns. Normal skin yeast called Pityrosporum ovale lives in oil-rich skin regions and plays a role in this disorder; the changes seen in the skin are due to the bodys inflammatory response to the yeast. […] Any baby can develop cradle cap. It is not contagious and does not occur because of poor hygiene. […] Severe cradle cap may be associated with a disease that causes a lowered immune system (immunodeficiency). […] Your childs medical professional may recommend a prescription shampoo. If your babys skin is inflamed, they may prescribe a mild corticosteroid cream or solution. If your baby has a skin infection, the medical professional can prescribe antibiotics.
  • #20 Seborrhoeic dermatitis & cradle cap in infants – National Eczema Society
    https://eczema.org/information-and-advice/types-of-eczema/seborrhoeic-dermatitis-cradle-cap-in-infants/
    Infantile seborrhoeic dermatitis (also known as seborrhoeic eczema) is a common skin condition seen in infants, which appears before the age of 3 months and usually resolves by 6-12 months. […] The exact cause of infantile seborrhoeic dermatitis is unknown. It is believed to be caused by the overproduction of oil-producing sebaceous glands on the babys scalp. Malassezia yeasts are also indicated in this condition, although their exact role is not clear. […] A family history of eczema or other skin conditions does not seem to be of great significance, although some babies with seborrhoeic dermatitis will also develop atopic eczema, especially if seborrhoeic dermatitis is more severe and extensive.
  • #21 Cradle cap treatment: babies | Raising Children Network
    https://raisingchildren.net.au/newborns/health-daily-care/health-concerns/cradle-cap
    Cradle cap happens when theres too much oil (sebum) in your babys skin. This is probably because their birthing mothers hormones are still circulating in their blood after birth. This extra oil interferes with the natural shedding of skin on your babys scalp, which leads to a build-up of dead skin over the scalp. […] Cradle cap might also happen if your babys immune system overreacts to the presence of yeast on their scalp. This overreaction causes inflammation.
  • #22 Cradle Cap Types, Causes, Symptoms & Treatment – Urban Skin and Hair Clinic
    https://urbanskinhairclinic.com/cradle-cap/
    Fungal Involvement: The presence of a yeast called Malassezia on the skin has been associated with cradle cap. Malassezia is a type of fungus that normally lives on the skin, but in some cases, it can grow more abundantly and contribute to the development of the condition. […] Immature Skin: The skin of newborns and infants is still developing and may not efficiently shed dead skin cells, leading to the accumulation of scales and flakes. […] Genetics: There might be a genetic predisposition for some babies to develop cradle cap. […] Environmental Factors: Certain environmental factors, such as weather conditions, heat, and humidity, might play a role in exacerbating cradle cap.
  • #23
    https://www.babyforest.in/blogs/thoughts-and-ideas/cradle-cap-seborrheic-dermatitis-in-infants?srsltid=AfmBOorlcdPds-ICyijTTx_J4JJ8AR_3XsEv3Pwi1iDFAwe6zSaQJArY
    The presence of a fungus known as Malassezia, which resembles yeast, is considered to be another factor that contributes to the problem. While harmless, this fungus can exacerbate the production of sebum and contribute to the development of cradle caps. […] Environmental elements, such as alterations in weather conditions or exposure to abrasive shampoos, can contribute to the onset or exacerbation of cradle cap. Parents can take proactive measures to handle the condition by comprehending and addressing these factors effectively. […] Cradle cap is primarily caused by a combination of factors, including the overproduction of sebum (skin oil) by the baby’s sebaceous glands, the presence of a yeast-like fungus called Malassezia, and certain environmental factors. These factors contribute to the development of the characteristic yellowish, greasy scales on a baby’s scalp.
  • #24 Cradle Cap in Adults: Treatment, Causes, Product Recommendations
    https://www.healthline.com/health/cradle-cap-in-adults
    Cradle cap in adults is a long-term skin condition that requires constant treatment. […] The exact cause of cradle cap in adults isn’t known. It’s believed to be related to the overproduction of oil in the skin and hair follicles. […] A fungus called Malassezia may also play a role. Malassezia is a yeast naturally found in your skin’s oil, but it can sometimes grow abnormally and lead to an inflammatory response. […] Other possible risk factors for cradle cap in adults include obesity, stress, environmental factors, such as pollution, other skin issues, such as acne, use of alcohol-based skin care products, and certain medical conditions, including HIV, stroke, epilepsy, or Parkinson’s disease.
  • #25 Cradle cap and your baby: the causes, the effects and how to treat it – b.box AU
    https://bbox.com.au/blogs/all/cradle-cap-and-your-baby-the-causes-the-effects-and-how-to-treat-it?srsltid=AfmBOor-o5CgsSsderC58UyRGYfatZWG0F0TjR-V721q1tFzHCeYMl75
    Cradle cap is a common skin condition that impacts newborn babies and infants. […] The exact causes of cradle cap remain unknown, however there are a series of factors that are thought to contribute to the development of cradle cap. […] The most widely accepted cause of cradle cap is from the overactive sebaceous glands in a babys skin. […] During pregnancy the mothers hormones may stimulate the babys sebaceous glands and play a role in the develop of the sebum build up. […] In some babies, Malassezia can overgrow due to their immature immune system and hormonal fluctuations and lead to an imbalance in the babys skin. […] Bacterial causes of cradle cap are much less common however they may contribute to the development of cradle cap. […] Genetics also play a role in the development of cradle cap. […] Environmental factors may trigger or exacerbate cradle cap. […] Cradle cap is a normal condition for new babies that is thought to be caused by overactive sebaceous glands, hormonal factors, bacterial or fungal factors, environmental factors and even genetic factors.
  • #26 Cradle cap: Treatment, causes, and prevention
    https://www.medicalnewstoday.com/articles/218942
    Cradle cap is a greasy, yellowish, scaly rash that appears in patches on the scalps of infants. It is not clear what causes cradle cap, but it may stem from overactive sebaceous glands, a fungal infection, or both. […] It is not clear what causes cradle cap, but it is not caused by allergy, bacterial infection, or bad hygiene. It may stem from overactive sebaceous glands, a fungal infection, or both. The sebaceous glands are found in the skin and produce an oil-like substance, known as sebum. Overactive sebaceous glands may produce too much sebum, and this could prevent the old skin cells from drying and falling off the scalp. Instead, they stick to the scalp. […] The reason why the glands are overactive may be because the mothers hormones stay in the babys body for a number of months after birth. If a fungal infection occurs, it could be the result of the mother taking antibiotics before giving birth, or because the baby was given them up to a week after birth. Antibiotics destroy bacteria that cause damage, but they can also destroy the useful bacteria that prevent things like fungal infection. […] Studies have indicated shown that babies who have cradle cap often have a family member with conditions such as eczema and asthma.
  • #27 Cradle Cap in Babies: Symptoms, Causes, and Natural Home Remedies
    https://www.tinyhealth.com/blog/cradle-cap-symptoms-causes-remedies
    When this natural balance is disrupted, it can lead to overgrowth of certain microbes like Malassezia (a common yeast) and Staphylococcus aureus (a type of bacteria). This may trigger inflammation and weaken the skin’s protective barrier. […] Specific strains like Malassezia restricta and M. globosa break down skin oils to release fatty acid byproducts. These byproducts can irritate the skin, causing inflammation and flaking, which may lead to cradle cap.
  • #28 Cradle Cap Main Info Page – Documenting Hope
    https://documentinghope.com/cradle-cap/
    Inflammation can also be caused by food intolerances, sensitivities and allergies. Cradle cap is common in babies whose family has a history of food intolerances, sensitivities and allergies and/or immune-related conditions such as asthma, eczema, and dermatitis. […] Infantile seborrheic dermatitis is known to have an underlying bacterial imbalance in the gut causing yeast or fungal infections. […] Antibiotics also contribute to cradle cap because they increase yeast infections which are known to trigger cradle cap.
  • #29 Cradle Cap: What Is It? And Do You Need to Worry About It?
    https://www.mamanatural.com/cradle-cap/
    No one knows for sure what exactly causes cradle cap, but there seem to be several likely culprits. Here are the theories: […] A bacteria imbalance in the gut. Your baby is especially susceptible to this if they were given antibiotics during delivery. […] A yeast infection. The yeast malassezia is said to cause certain types of dandruff and cradle cap. […] A weakened immune system. […] Nutritional imbalances. A deficiency in biotin, zinc, B6, selenium, or manganese can all contribute to cradle cap. […] Elevated maternal hormones. The theory is that this can cause babys sebaceous glands to overproduce. This causes an overproduction of sebum and an overgrowth of new skin cells, therefore an abundance of flakey, crusty skin.
  • #30 Cradle Cap: What Is It? And Do You Need to Worry About It?
    https://www.mamanatural.com/cradle-cap/
    No one knows for sure what exactly causes cradle cap, but there seem to be several likely culprits. Here are the theories: […] A bacteria imbalance in the gut. Your baby is especially susceptible to this if they were given antibiotics during delivery. […] A yeast infection. The yeast malassezia is said to cause certain types of dandruff and cradle cap. […] A weakened immune system. […] Nutritional imbalances. A deficiency in biotin, zinc, B6, selenium, or manganese can all contribute to cradle cap. […] Elevated maternal hormones. The theory is that this can cause babys sebaceous glands to overproduce. This causes an overproduction of sebum and an overgrowth of new skin cells, therefore an abundance of flakey, crusty skin.
  • #31 Cradle Cap (Seborrheic Dermatitis in Infants) Causes
    https://my.clevelandclinic.org/health/diseases/15786-cradle-cap-seborrheic-dermatitis-in-infants
    Cradle cap is a common, harmless skin condition that causes yellow scales and a rash on your babys scalp. […] Researchers dont fully understand why babies get cradle cap. However, they believe its likely due to a combination of factors. […] For example, glands in your babys scalp may produce too much oil (possibly due to hormones they receive from their mother). This causes skin cells that normally shed from your babys scalp to stay stuck to their scalp instead. A certain yeast (Malassezia) that naturally lives on your babys skin may also play a role, but researchers arent sure exactly how. […] But researchers do know its nothing you did and not your fault. Many babies get cradle cap, and it doesnt affect their lives or health (they sleep through most of it, anyway!).
  • #32 Cradle Cap (Seborrheic Dermatitis) in Babies: Causes & Treatments
    https://www.whattoexpect.com/first-year/baby-care/baby-skin-care/cradle-cap.aspx
    Cradle cap, also known as seborrheic dermatitis, is an inflammatory skin condition that appears as scaly skin, which can be red or yellow crusty scales and flakes. […] No one knows for sure what causes this harmless skin condition, which tends to run in families. Some experts speculate that cradle cap occurs because a moms pregnancy hormones remain in a babys system for some time after birth, causing the sebaceous glands in some infants’ scalps to go into overdrive. The excess oil in turn drives overproduction of a type of yeast in the skin known as Malassezia, resulting in flakes and rash.
  • #33 Cradle Cap Types, Causes, Symptoms & Treatment – Urban Skin and Hair Clinic
    https://urbanskinhairclinic.com/cradle-cap/
    Cradle cap, also known as infantile seborrheic dermatitis, is a common skin condition that often affects infants. The exact cause of cradle cap is not fully understood, but it is believed to be related to the overproduction of oil (sebum) in the sebaceous glands of the skin and the presence of a yeast called Malassezia. […] The exact cause of cradle cap is not fully understood, but it is believed to be a combination of factors contributing to the condition. Some of the primary causes and contributing factors of cradle cap include: […] Overactive Sebaceous Glands: In newborns and infants, the sebaceous glands, which produce the skin’s natural oils (sebum), can be overly active. This excessive production of sebum can lead to the formation of greasy and oily scales on the baby’s scalp. […] Hormonal Influence: Hormones passed from the mother to the baby during pregnancy may play a role in stimulating the sebaceous glands, contributing to cradle cap development.
  • #34 Cradle Cap: Symptoms, Causes & Treatment – Tua Saúde
    https://www.tuasaude.com/en/cradle-cap/
    Cradle cap is a benign skin condition in babies, also known as infant seborrheic dermatitis. […] While the cause is not completely known, it appears to be related to overactive sebaceous glands or a reaction to a specific type of fungus on the skin. […] The main causes of cradle cap include: Increased activity of the sebaceous glands can happen as a result of hormones from the mother that pass to the baby during pregnancy. […] These hormones can cause an increased production of sebum or oil from these glands, resulting in a buildup of dead skin cells and leading to symptoms of cradle cap. […] The presence of Malassezia furfur, a type of fungus that normally lives on the skin, can contribute to scalp inflammation and skin flaking, as well as the development of cradle cap. […] Cradle cap also appears to have a genetic link. […] It is more common for a baby to have cradle cap if there is a family history of atopic dermatitis or asthma.
  • #35 Content – Health Encyclopedia – University of Rochester Medical Center
    https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=90&contentid=P01893
    Cradle cap (infant seborrheic dermatitis) is scaly patches on a baby’s scalp. […] Researchers don’t know the exact cause of this skin condition. It is not contagious. It is not an infection or allergy. It is not caused by poor hygiene. […] Babies between the ages of 3 weeks and 12 months are at greater risk of getting cradle cap. […] The problem is not serious and will go away over time.
  • #36 Cradle cap | healthdirect
    https://www.healthdirect.gov.au/cradle-cap
    Cradle cap is thought to be caused by too much oil production by the skin. […] The cause of cradle cap is not clear. There are a few possible causes. […] It may be linked to your babys sebaceous glands. These are glands in the skin that produce an oily substance called sebum. After you give birth, some of your hormones may remain in your babys bloodstream. These hormones can cause your babys sebaceous glands to produce too much sebum. The excess sebum causes old skin cells to stick to the scalp, instead of drying up and falling off as they would normally do. […] Cradle cap is not contagious and is not caused by poor hygiene. If your baby has cradle cap, it does not mean that they have an infection or are not being looked after properly. […] Research has found that babies who get cradle cap often have family members with allergy-type conditions, such as asthma and eczema. […] Some babies who have cradle cap may develop other types of seborrhoeic dermatitis, such as dandruff, when they are older.
  • #37 Cradle Cap: Causes, Symptoms, and Treatment – Skinsight
    https://skinsight.com/skin-conditions/cradle-cap/
    Cradle cap is the common name for seborrheic dermatitis affecting the scalp of newborns. Normal skin yeast called Pityrosporum ovale lives in oil-rich skin regions and plays a role in this disorder; the changes seen in the skin are due to the bodys inflammatory response to the yeast. […] Any baby can develop cradle cap. It is not contagious and does not occur because of poor hygiene. […] Severe cradle cap may be associated with a disease that causes a lowered immune system (immunodeficiency). […] Your childs medical professional may recommend a prescription shampoo. If your babys skin is inflamed, they may prescribe a mild corticosteroid cream or solution. If your baby has a skin infection, the medical professional can prescribe antibiotics.
  • #38 Dandruff, Cradle Cap, and Other Scalp Conditions: MedlinePlus
    https://medlineplus.gov/dandruffcradlecapandotherscalpconditions.html
    There is a type of seborrheic dermatitis that babies can get. It is called cradle cap. It usually lasts a few months, and then goes away on its own. […] Normally, washing your baby’s hair every day with a mild shampoo and gently rubbing their scalp with your fingers or a soft brush can help. […] For severe cases, your health care provider may give you a prescription shampoo or cream to use.