FIGURE 70.6 Infantile seborrheic dermatitis or “cradle cap.” Seborrheic dermatitis condition is most commonly seen in infants, adolescents, and adults This is typically seen as an isolated phenomenon; however, it may occur as an overlap with psoriasis (so-called “sebopsoriasis”), atopic dermatitis, or may arise in association with immunocompromised states, such as HIV, or Parkinson disease Scalp scaling is typically not associated with alopecia, which helps to differentiate it from tinea capitis The scalp involvement often shows a faint, fine scaling in contrast to the more localized, thickly crusted cornflake-like scale encountered in Langerhans cell histiocytosis (LCH) An inflammatory reaction to local infection with Malassezia species has been demonstrated