The overall estimated prevalence of<unk>  in worldwide population is in the range of 0.2% to 5%. It generally occurs more commonly in females, in a ratio of 3:2, and most cases are diagnosed between the ages of 30 and 60, but it can occur at any age.<unk>  can occur in patients as diverse cutaneous manifestations alone or in combination with mucosal<unk>  and, or<unk>  of the nails. Study shows that frequency of mucosal involvement of<unk>  patients is 30- 70%. Oral<unk>  is relatively common, It is one of the most common mucosal diseases. The prevalence in the general population is about 1.27–2.0%, and it occurs more commonly in middle aged people. Oral<unk>  in children is rare. About 50% of females with oral<unk>  were reported to have undiagnosed vulvar<unk> . Some studies suggest that cutaneous<unk>  is more commonly found in men whilst oral<unk>  lesions are more commonly found in women.
Lichen planus
Geographic tongue
Lichen nitidus
Leukoplakia
Lichen simplex chronicus
Lichen myxedematosus
Lichen sclerosus
Tinea barbae