Cradle cap after chemotherapy: what to know

Cradle cap is a form of seborrheic dermatitis that can cause greasy or dry scale on the scalp. After chemotherapy, a flaky scalp may instead reflect dryness, irritation from products, infection, or changes linked with hair shedding. These possibilities can look similar without an examination. Do not assume that every crust is cradle cap, especially if the skin is tender or the immune system is weakened.

Use lukewarm water and a fragrance-free cleanser, then pat the scalp dry. Avoid scratching, picking, tight headwear, hair dye, and strongly scented oils or shampoos. A clinician may suggest an [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) approach to soften scale, but ask before applying anything to broken skin. If yeast-related inflammation is suspected, [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) may be considered by your care team.

Contact your oncology or dermatology team promptly for spreading redness, warmth, swelling, pus, bleeding, marked pain, fever, or a scalp rash that worsens quickly. Arrange an assessment for persistent scale, new bald patches, or sores, because chemotherapy can change how skin problems present and how treatment should be chosen.

Ask whether the scale fits cradle cap, treatment-related dryness, or infection; which cleanser is suitable during your treatment; whether a medicated product is safe with your current medicines; and how to protect areas where hair has shed.