Seborrheic Dermatitis

Causes

The exact cause is not known. Common skin yeast organisms or genetics may play a role.

Risk Factors

This problem is more common in men. Other things that may raise the risk are:

• A weak immune system due to things like HIV infection or a recent organ transplant
• Chronic health problems, such as hepatitis C
• Genetic diseases, such as Down syndrome
• Deficiency of the mineral zinc
• Stress

Symptoms

Problems may be mild to severe. Symptoms may also come and go over time.

The skin may have:

• Patchy scales that may look greasy or moist
• Yellow to white scales that flake off
• Redness
• Itching and burning
• Small pimples on the nose, eyebrows, chest, back, arm pits, or genitals

Newborns may have a thick, yellow, crusted scalp rash. This is known as cradle cap.

Diagnosis

The doctor will ask about symptoms and past health. A physical exam will be done. It will focus on the rash. This is often enough to make the diagnosis. The person may be referred to a doctor who treats skin problems.

Treatment

There is no cure for this condition. The rash may get better on its own in children. Baby shampoo, mineral oil, and anti-fungal shampoos can help.

In others, the goal of treatment is to manage symptoms. Options are:

• Prescription or over-the-counter shampoos
• Prescription or over-the-counter creams or lotions that contain:
  • Hydrocortisone or other cortisone (steroid) preparations
  • Antifungal medicines
  • Antibiotic medicine
  • Pimecrolimus or tacrolimus
  • Lithium salt

Prevention

There are no known guidelines to prevent this health problem.