Seborrheic Dermatitis

Question 1

Peak age of onset for seb derm:

Answer 1

40-60

Question 2

Etiology of Seb derm:

Answer 2

• increased malassezia furfur - Sebum with increased TG’s and decreased squalene/FFA

Question 3

Presentation of Seb derm in peds/infants?

Answer 3

• meds: erythematous, scaly, sometimes pruritic rash affecting seborrheic areas - infants: cradle cap, greasy adherent yellow scales - can also have macerated scaly plaques in skin folds

Question 4

Histopathology of seb derm:

Answer 4

• Irregular to psoriasiform spongiosis - Shoulder parakeratosis - superficial perivascular/perifollicular lymphocytic infiltrate

Question 5

Treatment of seb derm:

Answer 5

• Gold standard= topical azoles +/- topical corticosteroids
• other options: ciclopirox, salicylic acid shampoo, coal tar shampoos

Question 6

Treatment of cradle cap:

Answer 6

• frequent shampooing (antiseborrheic shampoos)
• mineral oil
• brushing/combing
• low potency topical CS

Question 7

Prognosis of seb derm in infants? Adults?

Answer 7

• infants spontaneous resolution by 12 months
• adolescents and adults tend to be more chronic and relapsing

Question 8

Increased incidence of seb derm in which two patient populations?