Neonate with a Hypopigmented Rash

A preterm male infant in the NICU develops a rash with erythematous and hypopigmented macules, patches, and papules of the arms, axillae, neck, upper back, groin, and legs. The rash has a geometric pattern in areas of occlusion (ie, under leads and wires) and maceration with white exudate in the axillae (Fig 1). Figure 1. Erythematous and hypopigmented macules, patches, and papules of the arms, axillae, neck, upper back, groin, and legs. Note the geometric pattern in areas of occlusion (ie, under leads and wires) and maceration with white exudate in the axilla. ### Prenatal and Birth Histories ### Presentation (Day 21) At 21 days of age, the infant was in a double-walled, heated, and humidified isolette and developed the rash described before. At that time, he required nasal continuous positive airway pressure for respiratory support and was tolerating full nasogastric feedings. #### Vital Signs #### Physical Examination