Seborrheic Dermatitis (SB)

Question 1

SB cause

Answer 1

• Inflammatory rxn to yeast
• Yeast in oil secretion of skin
• Immune system over reacts
• Cradle cap (infants b/t 2 weeks and 12 months)

Question 2

Who SB affects

Answer 2

• Early HIV infection patients
• AIDS patients
• Parkinson’s disease patients

Question 3

SB presentation

Answer 3

• Chronic relapsing condition
• well-demarcated erythematous plaques
• greasy-looking, yellowish scales
• distributed on areas rich is sebaceous glands
  
  • the scalp (mild form is dandruff: pityriasis sicca)
    
    • severe form: pityriasis steatoides, greasy scales
  • the external ear, the center of the face, upper part of the trunk and the intertriginous areas

Question 4

Management of SB

Answer 4

• Topical Anti fungal agents
  - Ketoconazole 2%, Selenium sulfide 2.5%, Zinc pyrithione 1% shampoos
  
  • Ciclopirox 1% shampoo, 0.77% ointment
• Topical steroids (symptom management)
• TCI (rarely used for facial dermatitis)
• Systemic antifungals (severe)
  
  • Itraconazole, ketoconazole, fluconazole, terbinafine

Question 5

Cradle Cap S/S

Answer 5

-Asymptomatic and non inflammatory accumulation of greasy scales may be dark to yellowish on the scalp

Question 6

Treatment of Cradle Cap

Answer 6

• Often spontaneously resolves
• Conservative measures
• Baby shampoo and remove scales with soft brush daily
• Emollient cream (vaseline) then baby shampoo