The main symptom of cradle cap is patches of greasy, scaly skin. It's usually found on the scalp and face, but sometimes affects the nappy area and areas where the skin creases. It can look like patches of white or yellow greasy scales on the scalp and face that form a crust which might flake off, small dry flakes of skin on the nappy area. The scales look similar on all skin tones.
Cradle cap is a term used to describe a form of seborrheic dermatitis that affects infants in the first three months of life. It is a self-limited inflammation of the skin of the scalp, presenting as yellow crusted lesions. The condition usually subsides within the first year. The cause is thought to be a reaction to some substance in the sebum or fatty material that is released by the sebaceous glands of the scalp skin. Cradle cap is not infectious, nor is it the result of unhygienic practices. It has the appearance of greasy whitish-yellow crusts or large flakes or scales of skin, while the surrounding skin may appear reddened. It is not typically associated with itching or swelling of the lesions, thus other diagnoses should be considered if such symptoms are present.
What cradle cap looks like
It can appear as:
- patches of white or yellow greasy scales on the scalp and face that form a crust which might flake off
- small, dry flakes of skin on the nappy area
- an oval-shape patch spreading from the forehead to the top of the head with pink skin and pale yellow scales
- a raised crust of yellow scales covering the inner corners of the eyebrows
The scales look similar on all skin tones. In some cases the scalp may become red or irritated, but itching is not typical of cradle cap.
Causes and risk factors
Cradle cap occurs due to overactive sebaceous glands and hormonal influences after birth. The skin may respond to a component in the sebum, leading to inflammation. Hormones from the mother’s body may remain in the baby for weeks or months, enlarging the glands and increasing sebum production. Malassezia, a yeast commonly present on the skin, is also implicated in the condition. The exact cause is not fully understood, and cradle cap is not contagious nor a sign of poor hygiene.
When to worry: signs of infection or other conditions
Cradle cap may become infected in some children. The skin under the crust will look red and possibly swollen, and blisters, pus, or weeping lesions may develop. This may require topical antibiotics. Infection can spread to other parts of the body, potentially causing impetigo or school sores. If the cradle cap becomes very inflamed, oozes, or spreads beyond the scalp, medical help should be sought promptly. It is important to differentiate cradle cap from other conditions such as eczema, impetigo, psoriasis, or ringworm, which can have overlapping features.
Home management and care
Most cradle cap cases are mild and resolve on their own or with simple care. Common recommendations include:
- Loosen the crusts by applying a gentle oil treatment at night (for example, baby oil, mineral oil, or petroleum jelly), then wash the hair with a mild baby shampoo the next morning and gently lift the crusts with a soft brush.
- Repeat daily until the scalp looks clearer. Cleanse the brush daily with mild soap and rinse well.
- In persistent cases, a mild anti-dandruff shampoo may be used, but care must be taken to prevent contact with the baby’s eyes as these products can be irritating.
If the scales are stubborn or spread to other parts of the scalp or body, or if there is concern about infection, consult a pediatrician. Antibiotics may be prescribed if a bacterial infection is suspected. In severe or persistent cases, a pediatric dermatologist may be involved to evaluate and tailor treatment.
Practical tips for care and safety
Cradle cap is not dangerous and usually resolves within a few months. A few practical steps can help:
- Keep the scalp clean with a mild, fragrance-free shampoo.
- Avoid picking or scratching patches to prevent irritation or infection.
- Be gentle when brushing to avoid pulling hair out with crusts.
- If unusual redness, swelling, oozing, or fever occurs, seek medical advice promptly.
Shampoos designed for cradle cap or seborrheic dermatitis, along with gentle brushing, can significantly ease the condition. Some infants experience recurrence as sebum production can continue for months after birth, so mild ongoing care may be helpful.
Related considerations and outcomes
Cradle cap is a common inflammatory skin condition that affects many babies in the first year of life. It is not contagious and is not caused by poor hygiene. While uncomfortable to look at, cradle cap generally does not cause distress to the baby, and most cases clear up with time and simple care. In some cases, physicians may distinguish cradle cap from other dermatologic conditions by examining the distribution and appearance of the scales and any accompanying symptoms.
For ongoing or severe concerns, including persistent itching, extensive facial involvement, or signs of infection, professional medical evaluation is recommended. A doctor can help determine whether the condition is cradle cap or another dermatologic issue and advise appropriate treatment, which may include medicated shampoos or topical therapies.
