Lichen sclerosus et atrophicus commonly involves genital area. In girls, lesions begin around periclitoral hood to vulva and spare vaginal/cervix; in boys, occurs in the foreskin, glans penis, and coronal sulcus.

Lichen sclerosus et atrophicus commonly involves genital area. In girls, lesions begin around periclitoral hood to vulva and spare vaginal/cervix; in boys, occurs in the foreskin, glans penis, and coronal sulcus.

• A. Sharply demarcated erythema that becomes thin, ivory-white, porcelain-like, and sclerotic plaques; in girls, spares vaginal and cervix; periclitoral hood to vulva; in boys, foreskin, glans penis, and coronal sulcus
• B. Localized scalp involvement with scaly plaques
• C. Vesicular lesions on mucous membranes
• D. Patchy hair loss with scaly plaques

Answer: (A)

Lichen sclerosus et atrophicus in children classically presents as a chronic, inflammatory process of the genital skin with distinctive ivory-white, sclerotic plaques and a sharply demarcated erythematous border. In girls, the disease starts around the periclitoral hood and vulva, typically sparing the vaginal and cervical mucosa; in boys, it involves the foreskin, glans penis, and coronal sulcus. This precise pattern—erythema progressing to thin, porcelain-like plaques in the genital region with the described distribution—is the hallmark of the condition and is what the option captures. Other descriptions point to different diseases affecting other sites or with different lesion types (scalp plaques, vesicular mucosal lesions, or patchy hair loss), which do not fit the genital-limited, sclerotic Peds presentation of lichen sclerosus.

Lichen sclerosus et atrophicus in children classically presents as a chronic, inflammatory process of the genital skin with distinctive ivory-white, sclerotic plaques and a sharply demarcated erythematous border. In girls, the disease starts around the periclitoral hood and vulva, typically sparing the vaginal and cervical mucosa; in boys, it involves the foreskin, glans penis, and coronal sulcus. This precise pattern—erythema progressing to thin, porcelain-like plaques in the genital region with the described distribution—is the hallmark of the condition and is what the option captures.

Other descriptions point to different diseases affecting other sites or with different lesion types (scalp plaques, vesicular mucosal lesions, or patchy hair loss), which do not fit the genital-limited, sclerotic Peds presentation of lichen sclerosus.