Seborrheic Dermatitis
Symptoms
Seborrheic dermatitis presents as flaky, greasy scales on red skin, particularly in sebaceous‑gland‑rich areas such as the scalp, eyebrows, nasolabial folds, and chest. Dandruff is the mild scalp manifestation. Itching and burning vary in intensity. In infants, thick yellow scalp scales form “cradle cap.” Flares often coincide with seasonal changes or stress.
Cause
The condition involves an inflammatory response to Malassezia yeast combined with individual susceptibility. Excess sebum creates a favorable environment for yeast proliferation. Genetic factors and immune system differences influence disease expression. Cold, dry weather and psychological stress can precipitate flares. Certain neurologic conditions (e.g., Parkinson’s) increase prevalence.
Treatment
Medicated shampoos containing ketoconazole, selenium sulfide, or zinc pyrithione reduce yeast and scale. Topical antifungals or mild corticosteroids calm facial lesions. Calcineurin inhibitors offer steroid‑sparing control for sensitive areas. Non-steroid topical treatments like Zoryve may also help reduce inflammation. Regular cleansing with gentle, non‑soap cleansers maintains results. For stubborn cases, oral antifungals like itraconazole may be prescribed short‑term.
Dr. Beth Schulz-Butulis
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