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Women with vulvar lichen sclerosus face greater birth injury risks. A new study found that women with vulvar lichen sclerosus (VLS) are significantly more likely to experience serious perineal tears during vaginal delivery. Compared to women without VLS, they had a 1.32x higher risk of second-degree tears and a 3.37x higher risk of obstetric anal sphincter injuries — underscoring the need for continuous VLS treatment throughout pregnancy.
A new retrospective cohort study out of North Denmark has found that women with vulvar lichen sclerosus (VLS) — a chronic inflammatory skin condition affecting the vulva — face substantially higher risks of serious perineal tears during vaginal delivery compared to women without the condition.
Researchers reviewed records from over 665 vaginal births between 2019 and 2024, comparing outcomes in women with and without VLS. The findings were notable: VLS was associated with a 1.32-fold higher risk of second-degree perineal tears and a 3.37-fold higher risk of obstetric anal sphincter injuries (OASI).
By the Numbers:
Why it matters: VLS is often undertreated, yet this study shows it can have serious consequences during childbirth. Clinicians are urged to ensure adequate and continuous VLS management before and throughout pregnancy to help reduce the risk of obstetric trauma.
