What is extragenital lichen sclerosus?
Extragenital lichen sclerosus refers to white, shiny patches that develop on skin away from the vulva, penis, or anus. This is much less common than genital lichen sclerosus and often causes few symptoms.
Detailed Medical Explanation
Extragenital lichen sclerosus most often appears on the upper body, breasts, inner thighs, or underarms. The patches may be wrinkled or slightly indented, and rarely cause itching or discomfort. Unlike genital lichen sclerosus, cancer risk is not increased. Treatment is similar, using potent topical steroids if needed. See NHS and BAD.
Clinical Context
If you have white patches anywhere on the skin, see a dermatologist for diagnosis. Our clinic can refer to skin specialists as needed: Vulval Skin Conditions Clinic.
Evidence-Based Approaches
Extragenital lichen sclerosus is rare and does not increase cancer risk. Topical steroids are used for symptom control. For clinical advice, see NICE BNF.