What is the prognosis of lichen planus?

Updated: Feb 24, 2020
  • Author: Tsu-Yi Chuang, MD, MPH, FAAD; Chief Editor: William D James, MD  more...
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Answer

The prognosis for lichen planus is good, as most cases regress within 18 months. Some cases recur. In lichen planus, atrophy and scarring are seen in hypertrophic lesions and in lesions on the scalp. Cutaneous lichen planus does not carry a risk of skin cancer, but ulcerative lesions in the mouth, particularly in men, do have a low rate of malignant transformation. However, the malignant transformation rate of oral lichen planus is low (<2% in one report). [17] Vulvar lesions in women may also be associated with squamous cell carcinoma.


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