What is Seborrheic Dermatitis?

Seborrheic dermatitis is a common, chronic inflammatory skin condition that affects areas of the body with many oil (sebaceous) glands. It often causes:

Typical Symptoms

• Flaky, white or yellowish scales

• Redness and irritation

• Itching

• Greasy or waxy patches

Commonly Affected Areas

• Scalp (often called dandruff when mild)

• Eyebrows and eyelids

• Sides of the nose

• Ears

• Beard area

• Chest or upper back (less common)

What Causes It?

The exact cause isn’t fully understood, but contributing factors include:

• Overgrowth of a yeast called Malassezia

• Skin oil (sebum) production

• Individual susceptibility

• Stress or fatigue

• Cold, dry weather

• Hormonal changes

Who Gets It?

Seborrheic dermatitis affects:

• Infants (known as cradle cap)

• Adults (especially ages 30–60)

• People with oily skin

• People with certain conditions like Parkinson’s disease or weakened immunity (more severe forms)

Is It Contagious?

No — it’s not contagious.

How Is It Treated?

Treatments help control symptoms but may not cure the condition:

• Medicated shampoos (zinc pyrithione, ketoconazole, selenium sulfide)

• Topical antifungals

• Topical corticosteroids (short-term use)

• Anti-inflammatory creams (like calcineurin inhibitors)

• Gentle skin care and stress management