Seborrheic Dermatitis (Cradle Cap)
Common, harmless scaly scalp condition of infancy.
Primary risk age: Infants, usually appearing in the first weeks to months of life.
- Urgency
- Mild
- Typical age
- Infants, usually appearing in the first weeks to months of life.
- Body system
- Dermatological System
Typical course: Often improves over weeks with gentle care and resolves within the first year.
Reviewed against AAP · CDC · WHO · NHS guidance Last reviewed 2026-06-13
1. Summary & Pathophysiology
Common, harmless scaly scalp condition of infancy.
Pathophysiology (Development Path)
Overactive oil glands and skin yeast produce greasy scaling on the scalp and other oil-rich areas; the process is self-limiting as the glands quiet down.
Primary Causes & Etiology
Not fully understood; linked to maternal hormones stimulating oil glands and to a skin yeast (Malassezia). It is not caused by poor hygiene or allergy.
2. Symptom Continuum
- Early Onset Signs
Greasy yellow or white flakes and scales on the scalp.
- Progressive Phase
Thicker crusts on the scalp, sometimes spreading to the eyebrows, behind the ears, or the diaper area, usually without itch.
- Severe Indicators
Widespread redness, weeping, signs of infection, or significant discomfort are unusual and warrant review.
3. Clinical Verification
Clinical diagnosis from the typical greasy scaling; no tests are needed.
4. Care & Elements Plan
Primary Care Treatment Plan
Most cases need no treatment and resolve on their own. Gentle measures soften and lift the scale when desired.
Home Support Elements
Massage a little baby or mineral oil into the scalp, wait a few minutes, then gently loosen scales with a soft brush and wash with a mild baby shampoo. Avoid picking.
Generic Active Ingredients (No Brands)
- Baby or mineral oil (drug-free scale softener)
- mild emollients
- antifungal or low-strength anti-inflammatory creams (only if recommended by a clinician for stubborn cases).
Lists active elements only. Never administer self-designed therapies.
5. Doctor Critical Lines
Critical Thresholds: When to See a Doctor
See a doctor if the skin becomes very red or weepy, spreads widely, looks infected, the baby is uncomfortable, or it does not improve with simple care.
6. Vaccine & Prevention
Routine Prophylaxis (Prevention)
Routine gentle scalp washing helps; the condition is largely developmental and cannot be fully prevented.
Immunization Context
No vaccine is relevant to cradle cap.
7. Timelines & Outlook
Active Timeline
Often improves over weeks with gentle care and resolves within the first year.
Expected Prognosis
Excellent; cradle cap almost always clears by around 12 months of age.
Potential Untreated Complications
Rarely, secondary infection of broken skin.
More in Atopic & Hypersensitivity Epidermal Barriers
Mild Atopic Dermatitis (Infantile Eczema)
Chronic Relapsing Pruritic Inflammatory Skin Disease
Infants starting at 2 to 6 months through childhood and adolescence.
Mild Erythema Toxicum Neonatorum (ETN)
Benign Transient Neonatal Pustular Dermatosis
Neonates (Typically presents within 24 to 72 hours of birth; rare in premature infants)
Mild Pityriasis Rosea
Benign Self-Limiting Post-Viral Exanthem
5 to 15 Years (Peak occurrence)