Two years ago, an asymptomatic lesion manifested along a 5-year-old boy’s jawline. When it didn’t go away on its own, his mother took him to the pediatrician. Unfortunately, the pediatrician could not identify the lesion, but his recommendation was very clear: Remove it.

The patient is referred to dermatology for evaluation and possible treatment. In the clinic, the child appears quite healthy and is talkative. The lesion doesn’t bother him as much as it does his mother, who has noticed the boy’s friends and cousins teasing him about it.

The lesion is a pink linear collection of papules— each 1 to 3.5 mm in width—configured in a curved pattern mimicking the line of the jaw. It runs from near the left oral commissure along the angle of the jaw, measuring a total 14 cm.

Magnification reveals that the lesion is entirely composed of tiny vesicles. No inflammation is appreciated. The lesion is tender to touch. Further palpation reveals that the lesion is quite superficial, with no underlying induration.