Common signs of cradle cap include:
- Patchy scaling or thick crusts on the scalp
- Oily or dry skin covered with flaky white or yellow scales
- Skin flakes
- Possibly mild redness
Similar scales may also be present on the ears, eyelids, nose and groin.
Cradle cap is common in newborns. It usually isn't itchy.
Cradle cap is the common term for infantile seborrheic dermatitis. It's sometimes confused with another skin condition, infantile eczema. A major difference between these conditions is that eczema usually causes significant itching.
When to see a doctor
See your baby's doctor if:
- You've tried treating it at home without success
- The patches spread to your baby's face or body
The cause of cradle cap isn't known. One contributing factor may be hormones that pass from the mother to the baby before birth. These hormones can cause too much production of oil (sebum) in the oil glands and hair follicles.
Another factor may be a yeast (fungus) called malassezia (mal-uh-SEE-zhuh) that grows in the sebum along with bacteria. Antifungal treatments, such as ketoconazole, are often effective, supporting the idea that yeast is a contributing factor.
Cradle cap isn't contagious, and it's not caused by poor hygiene.