Scattered, Linear Papules Across Girl’s Abdomen – Let’s Diagnose

At his 6-year-old daughter’s regular check-up, a father asked the pediatrician to look at a skin condition that had recently developed on his daughter’s abdomen. The lesions consisted of tiny papules, some scattered and some in linear configurations, on her abdomen. The lesions were asymptomatic, and the patient felt no discomfort, but her father was concerned as the lesions had initially appeared 4 weeks prior and had not yet resolved.

Is it lichen nitidus, keratosis pilaris, lichen planus, or atopic dermatitis?

Can you diagnose the patient? Use the Differential Builder in VisualDx to help you.