The oral lesions of the lichen planus:
a. Are usually painful.
b. Rarely appear before lesion elsewhere on the body.
c. May be part of a syndrome in which lesions also appear on the skin, conjunctiva and genitalia.**
d. Often appear in nervous, high-strung individuals.
e. Heals with scarring.
• Skin sites: forearm, shin, scalp, genitalia.
Etiology: • Unknown • Autoimmune T cell–mediated disease targeting basal keratinocytes. Lichen Planus Variants: reticular (most common oral form) - erosive (painful) - atrophic, papular, plaque types; bullous (rare).