Pediatric emergency medicine trisk 1815 1815

FIGURE 88.10 Juvenile xanthogranuloma (JXG) Skin-Colored Papules Many entities may present as skin-colored papules Here we will highlight lichen striatus and lichen nitidus When the papules are arranged linearly, streaming down an extremity or across the face or neck, lichen striatus should be considered If the papules are not arranged linearly but are tiny pinpoint, skincolored papules, lichen nitidus should be considered, especially if a Koebner phenomenon is present Flat warts may be skin colored as well Lichen Striatus Lichen striatus is an asymptomatic eruption of unknown cause The flat-topped papules are arranged linearly and may be confluent Lesions may occur in a wide band but remain characteristically linear or more accurately curvilinear patterns corresponding to lines of Blaschko The lesions are skin colored to erythematous in Caucasians and often hypopigmented in African Americans The eruption follows the long axis of an extremity ( Fig 88.11 ) or may involve any other part of the skin surface (especially the face) Because the eruption resolves spontaneously within years, no treatment is necessary