noun
Medical term for a group of skin conditions characterized by small, flat-topped, shiny bumps. Often used in compound names like 扁平苔癬 (lichen planus).
皮膚科で苔癬と診断された。
I was diagnosed with lichen at the dermatology clinic.
扁平苔癬は痒みを伴うことが多い。
Lichen planus is often accompanied by itching.