About this condition
Dandruff and scalp flaking do not always represent the same problem. Seborrheic dermatitis is an inflammatory disorder that often waxes and wanes. It can also affect the eyebrows, folds beside the nose, ears and other areas. In infants, a related pattern may appear as scalp crusts, but infant care is different from adult treatment.
Possible causes and features
The course is influenced by individual skin characteristics, the response to Malassezia yeasts, climate and irritants. Scales may look greasy or dry; itching varies and can be mild. These signs overlap with psoriasis, fungal scalp infection and contact dermatitis, which is why diagnosis matters.
The clinician examines the scalp, hair and other typical sites. Trichoscopy or testing to exclude an infection may be appropriate when findings are not typical, but a routine battery of tests is not needed for everyone.
Clinical assessment and next steps
Treatment for adults may include appropriately selected antifungal shampoos and brief courses of topical anti-inflammatory treatment. Selection depends on severity and location. Infants require gentle age-appropriate care, not automatic use of adult medicated shampoos or creams.
Persistent symptoms, marked inflammation or hair changes deserve reassessment. Do not equate every flake with a fungal infection or attempt prolonged strong treatment without determining the cause.
Related topics: Hair loss and thinning; Trichoscopy of the hair and scalp.
Signs and symptoms
- Dandruff, greasy or dry scales and scalp redness.
- Itching or irritation around the hairline, ears or eyebrows.
- In infants, dense scales or crusts on the scalp.
Diagnosis and tests
Usually a clinical diagnosis. When the pattern is unusual, psoriasis, fungal infection or contact dermatitis may need to be ruled out. Trichoscopy can provide a magnified view of scalp changes.
Care and treatment approaches
Adults may use medically selected antifungal shampoos and topical anti-inflammatory agents. In infants, gentle care is preferred and adult treatment regimens should not be copied. Duration and choice depend on age and severity.
When to seek urgent care
Substantial pain, oozing, pus, fever or rapidly spreading inflammation requires prompt assessment for possible infection. Call 103 in Ukraine for a life-threatening deterioration, breathing difficulty or impaired consciousness. Routine dandruff is not an emergency.
Frequently asked questions
Is seborrheic dermatitis contagious?
No, it is not considered contagious, although other infectious conditions can sometimes look similar.
Does dandruff always mean seborrheic dermatitis?
No. Scaling has several possible causes, and persistent complaints may need examination.
Can a child and an adult use the same medicated shampoo?
Adult medications should not automatically be used on an infant; care must be appropriate for the child’s age.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
