Skin & Rashes

Seborrheic Dermatitis Beyond the Scalp

Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician

Content reviewed against published AAP, AAD, NIH guidelines

Editorial policy

Last reviewed:

Baby skin is sensitive and changes frequently. If you are noticing seborrheic dermatitis beyond the scalp, here is what you need to know.

The short answer

Seborrheic dermatitis can spread beyond the scalp to the face, behind the ears, neck folds, armpits, and diaper area. It appears as greasy, yellowish, scaly patches that are typically not itchy. This is different from eczema and usually resolves within the first year. Gentle cleaning and moisturizing are usually sufficient treatment.

Key takeaways

  • Seborrheic dermatitis can spread beyond the scalp to the face, behind the ears, neck folds, armpits, and diaper area. It appears as greasy, yellowish, scaly patches that are typically not itchy. This is different from eczema and usually resolves within the first year. Gentle cleaning and moisturizing are usually sufficient treatment.
  • Usually normal when: Greasy, yellowish scales in skin folds that are not red, painful, or itchy
  • Call your doctor if: The affected areas become infected with oozing, pus, or increased warmth
  • Varies by age — see the age-by-age breakdown below
“Eczema is very common in babies and children. About 1 in 10 children will develop eczema, typically starting in the first few months of life.”
— Eczema in Babies and Children, American Academy of Pediatrics (AAP)

Thousands of parents search for this exact thing. You are not alone.

What Parents Should Know

According to AAP, AAD, NIH guidelines, seborrheic dermatitis can spread beyond the scalp to the face, behind the ears, neck folds, armpits, and diaper area. It appears as greasy, yellowish, scaly patches that are typically not itchy. This is different from eczema and usually resolves within the first year. Gentle cleaning and moisturizing are usually sufficient treatment. At 0-3 months, seborrheic dermatitis commonly starts on the scalp and may spread to the face, eyebrows, behind the ears, and skin folds during the first few months. When it appears in the diaper area, it can look like a severe diaper rash. The greasy, salmon-colored patches are characteristic. It is not painful or itchy for your baby. It is generally considered normal when greasy, yellowish scales in skin folds that are not red, painful, or itchy. However, you should contact your pediatrician promptly if the affected areas become infected with oozing, pus, or increased warmth.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Greasy, yellowish scales in skin folds that are not red, painful, or itchy
The affected areas become infected with oozing, pus, or increased warmth
Seborrheic dermatitis that remains mild and is slowly improving over weeks
Your baby has widespread rash with poor feeding, fever, or failure to gain weight
Patches in the diaper area that look different from typical diaper rash, with a greasy, salmon-pink appearance
The rash is spreading significantly or covering large areas of the body

By Age

What to expect by age

0-3 months

Seborrheic dermatitis commonly starts on the scalp and may spread to the face, eyebrows, behind the ears, and skin folds during the first few months. When it appears in the diaper area, it can look like a severe diaper rash. The greasy, salmon-colored patches are characteristic. It is not painful or itchy for your baby.

3-6 months

Body seborrheic dermatitis may be at its most widespread at this age, affecting the scalp, face, neck, armpits, and groin creases. It can overlap with eczema, making diagnosis tricky. Your pediatrician can help distinguish between the two. Gentle cleansing with a mild soap and applying a light moisturizer usually helps.

6-12 months

Seborrheic dermatitis typically begins to improve during this period. The body patches usually clear before the scalp. If patches persist or worsen, your pediatrician may prescribe a mild antifungal cream or low-potency topical steroid for affected body areas.

12-24 months

Most infantile seborrheic dermatitis resolves by the first birthday. If it persists beyond this age, a dermatology evaluation may be helpful to confirm the diagnosis and rule out other conditions. Seborrheic dermatitis can recur later in life, typically during puberty and adulthood.

What to Tell Your Pediatrician

  • Describe when you first noticed seborrheic dermatitis beyond the scalp and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if the rash is spreading significantly or covering large areas of the body.
  • Mention if you are unsure whether the rash is seborrheic dermatitis or eczema.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

What Should You Do?

When to take action

Probably normal when...
  • Greasy, yellowish scales in skin folds that are not red, painful, or itchy
  • Seborrheic dermatitis that remains mild and is slowly improving over weeks
  • Patches in the diaper area that look different from typical diaper rash, with a greasy, salmon-pink appearance
Mention at your next visit when...
  • The rash is spreading significantly or covering large areas of the body
  • You are unsure whether the rash is seborrheic dermatitis or eczema
  • The patches are becoming very red, inflamed, or are not improving with gentle care
Act now when...
  • The affected areas become infected with oozing, pus, or increased warmth
  • Your baby has widespread rash with poor feeding, fever, or failure to gain weight

What You Can Do at Home

  • Keep track of when you notice seborrheic dermatitis beyond the scalp — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that greasy, yellowish scales in skin folds that are not red, painful, or itchy — this is generally within the range of normal.
  • At 0-3 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
  • Use fragrance-free, hypoallergenic products on your baby's skin. Avoid over-bathing — 2-3 baths per week is usually sufficient.
  • While monitoring at home, seek immediate care if the affected areas become infected with oozing, pus, or increased warmth.

Cradle Cap (Seborrheic Dermatitis)

Cradle cap is a very common, harmless condition that causes yellowish, greasy, scaly patches on your baby's scalp. It is not caused by poor hygiene, it does not bother your baby, and it almost always clears up on its own within the first several months of life.

Cradle Cap on Baby's Eyebrows

Cradle cap (seborrheic dermatitis) commonly appears on the eyebrows as yellowish, greasy, flaky scales. This is completely harmless and very common in babies under 12 months. Gently massaging with oil and using a soft brush to loosen the scales usually resolves it. It is not painful or itchy for your baby.

Baby Rash in Skin Folds - Neck, Armpits, and Creases

Rashes in baby's skin folds (neck, armpits, groin, behind ears, elbow and knee creases) are extremely common because these warm, moist areas trap moisture from drool, spit-up, sweat, and milk. The medical term is intertrigo. Most fold rashes respond to keeping the area clean and dry. If the rash is bright red, has satellite spots, or has a yeasty smell, it may have developed a yeast (candida) infection and need antifungal treatment. Keeping folds dry is both the treatment and prevention.

Baby Yeast Diaper Rash (Candidal Diaper Dermatitis)

A yeast diaper rash is caused by the Candida fungus, which thrives in warm, moist environments like a diaper. It looks different from regular diaper rash: it is typically bright red with sharply defined borders and small red satellite bumps around the edges. It does not respond to regular diaper cream and needs an antifungal treatment instead.

Triage

Rash Decision Tree

Identify common rashes and determine when to seek care.

Guide

Baby Skin Conditions Guide

Visual guide to common baby skin conditions, rashes, and when to see a doctor.

Milestone

Month-by-Month Development

Detailed monthly development guides from birth through 24 months.

Guide

When to Call the Doctor

General guide on when to call the pediatrician, visit urgent care, or go to the ER.

Frequently asked questions

Is seborrheic dermatitis beyond the scalp normal?
Seborrheic dermatitis can spread beyond the scalp to the face, behind the ears, neck folds, armpits, and diaper area. It appears as greasy, yellowish, scaly patches that are typically not itchy. This is different from eczema and usually resolves within the first year. Gentle cleaning and moisturizing are usually sufficient treatment.
When should I call the doctor about seborrheic dermatitis beyond the scalp?
The affected areas become infected with oozing, pus, or increased warmth Your baby has widespread rash with poor feeding, fever, or failure to gain weight
When is seborrheic dermatitis beyond the scalp normal?
Greasy, yellowish scales in skin folds that are not red, painful, or itchy Seborrheic dermatitis that remains mild and is slowly improving over weeks Patches in the diaper area that look different from typical diaper rash, with a greasy, salmon-pink appearance
What causes seborrheic dermatitis beyond the scalp?
Seborrheic dermatitis can spread beyond the scalp to the face, behind the ears, neck folds, armpits, and diaper area. It appears as greasy, yellowish, scaly patches that are typically not itchy. This is different from eczema and usually resolves within the first year. Gentle cleaning and moisturizing are usually sufficient treatment. Common explanations include: Greasy, yellowish scales in skin folds that are not red, painful, or itchy. Seborrheic dermatitis that remains mild and is slowly improving over weeks.
What should I mention to my pediatrician about seborrheic dermatitis beyond the scalp?
You should mention seborrheic dermatitis beyond the scalp at your next visit if: The rash is spreading significantly or covering large areas of the body. You are unsure whether the rash is seborrheic dermatitis or eczema. The patches are becoming very red, inflamed, or are not improving with gentle care.
Is seborrheic dermatitis beyond the scalp normal at 0-3 months?
Seborrheic dermatitis commonly starts on the scalp and may spread to the face, eyebrows, behind the ears, and skin folds during the first few months. When it appears in the diaper area, it can look like a severe diaper rash. The greasy, salmon-colored patches are characteristic. It is not painful or itchy for your baby.
Is seborrheic dermatitis beyond the scalp normal at 3-6 months?
Body seborrheic dermatitis may be at its most widespread at this age, affecting the scalp, face, neck, armpits, and groin creases. It can overlap with eczema, making diagnosis tricky. Your pediatrician can help distinguish between the two. Gentle cleansing with a mild soap and applying a light moisturizer usually helps.
Should I go to the ER for seborrheic dermatitis beyond the scalp?
Seek emergency care if the affected areas become infected with oozing, pus, or increased warmth, or if your baby has widespread rash with poor feeding, fever, or failure to gain weight. When in doubt, call your pediatrician's after-hours line for guidance.
Does seborrheic dermatitis beyond the scalp go away on its own?
In many cases, seborrheic dermatitis beyond the scalp resolves on its own, especially when greasy, yellowish scales in skin folds that are not red, painful, or itchy. By 12-24 months, most infantile seborrheic dermatitis resolves by the first birthday. If it persists beyond this age, a dermatology evaluation may be helpful to confirm the diagnosis and rule out other conditions. Seborrheic dermatitis can recur later in life, typically during puberty and adulthood.
AAPAADNIH

References

  1. [1]American Academy of Pediatrics. Cradle Cap. HealthyChildren.org. AAP
  2. [2]American Academy of Dermatology. Seborrheic Dermatitis: Overview. AAD
  3. [3]National Library of Medicine. Infantile Seborrheic Dermatitis. Journal of Clinical Medicine. NIH

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Seborrheic Dermatitis Beyond the Scalp.

Things to mention

  • Describe when you first noticed seborrheic dermatitis beyond the scalp and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if the rash is spreading significantly or covering large areas of the body.
  • Mention if you are unsure whether the rash is seborrheic dermatitis or eczema.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

Observations to share

  • The rash is spreading significantly or covering large areas of the body
  • You are unsure whether the rash is seborrheic dermatitis or eczema
  • The patches are becoming very red, inflamed, or are not improving with gentle care

Urgent signs to report immediately

  • The affected areas become infected with oozing, pus, or increased warmth
  • Your baby has widespread rash with poor feeding, fever, or failure to gain weight

My notes

From ismybabyalright.com — free, evidence-based baby health guides

All content follows our editorial policy and is reviewed against published clinical guidelines.

2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members

Related Resources

Baby Skin Conditions GuideRash TriagePoop Color GuideBaby Tracker

Bottom line

Most cases of seborrheic dermatitis beyond the scalp are normal. Talk to your pediatrician if the affected areas become infected with oozing, pus, or increased warmth.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

Share:FacebookX

Was this page helpful?

Related Skin Concerns

Cradle Cap (Seborrheic Dermatitis)

Cradle cap is a very common, harmless condition that causes yellowish, greasy, scaly patches on your baby's scalp. It is not caused by poor hygiene, it does not bother your baby, and it almost always clears up on its own within the first several months of life.

Cradle Cap on Baby's Eyebrows

Cradle cap (seborrheic dermatitis) commonly appears on the eyebrows as yellowish, greasy, flaky scales. This is completely harmless and very common in babies under 12 months. Gently massaging with oil and using a soft brush to loosen the scales usually resolves it. It is not painful or itchy for your baby.

Baby Rash in Skin Folds - Neck, Armpits, and Creases

Rashes in baby's skin folds (neck, armpits, groin, behind ears, elbow and knee creases) are extremely common because these warm, moist areas trap moisture from drool, spit-up, sweat, and milk. The medical term is intertrigo. Most fold rashes respond to keeping the area clean and dry. If the rash is bright red, has satellite spots, or has a yeasty smell, it may have developed a yeast (candida) infection and need antifungal treatment. Keeping folds dry is both the treatment and prevention.

Baby Yeast Diaper Rash (Candidal Diaper Dermatitis)

A yeast diaper rash is caused by the Candida fungus, which thrives in warm, moist environments like a diaper. It looks different from regular diaper rash: it is typically bright red with sharply defined borders and small red satellite bumps around the edges. It does not respond to regular diaper cream and needs an antifungal treatment instead.

My Baby Has an Extra Nipple (Accessory Nipple)

Accessory (supernumerary) nipples are one of the most common minor congenital findings, occurring in about 1 in 18 people. They appear as small, flat, often pigmented bumps along the "milk line" — an embryonic line running from the armpit to the groin on each side. Most people mistake them for moles. Accessory nipples are almost always harmless and require no treatment. In rare cases, they may be associated with kidney abnormalities, so some pediatricians recommend a renal ultrasound if one is found, though this practice varies.

My Baby Was Born with a Raw Spot on Their Scalp (Aplasia Cutis)

Aplasia cutis congenita (ACC) is a condition where a baby is born with a small area of missing skin, most commonly on the scalp. It occurs in about 1 in 10,000 births. The affected area may look like a raw wound, an ulcer, or may have already healed into a thin, shiny scar by the time of birth. Most cases are small, isolated, and heal well with basic wound care — the area eventually forms a hairless scar. Larger defects or those associated with other findings may need more investigation, but isolated small ACC has an excellent prognosis.