Lichen planus is an inflammatory disorder that appears as purplish, flat-topped bumps when it affects the skin. Bumps may appear in clusters or lines.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
At Mayo Clinic, our benefactors play a crucial role in our work. Make a gift today to discover more cures and save more lives.