Seborrheic Dermatitis Beyond the Scalp
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.
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By Age
What to expect by age
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.
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.
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.
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 Should You Do?
When to take action
- 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
- 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
- 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
Sources
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Trust your instincts. If something feels wrong, reach out to your pediatrician.
Worrying about your baby means you care. That is a good thing.
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.
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Baby acne and eczema can both cause facial rashes, but they look and feel different. Baby acne appears as small red or white bumps, similar to teenage acne, usually on the cheeks, nose, and forehead. Eczema causes dry, rough, red, itchy patches. Baby acne resolves on its own by 3 to 4 months, while eczema may need ongoing management.
Baby Acne (Neonatal Acne)
Baby acne is a very common, harmless condition that appears as small red or white bumps on your newborn's face, usually around 2-4 weeks of age. It is caused by maternal hormones still circulating in your baby's system and clears up on its own within a few weeks to months without any treatment.