Picture of Lichen Planus (Oral)
Lichen planus (LP) is a chronic recurrent inflammatory disorder of the skin and mucous membranes. It is characterized by small, flat-topped, polygonal bumps that may coalesce into rough, scaly plaques on the skin.
Oral lichen planus. Tongue of a 68-year-old woman with lichen planus, showing white patches. This condition affects middle-aged adults, but has an unknown cause. In some cases it may be of nervous or emotional origin (such as severe stress) but in others it may be an allergic reaction or due to drugs.
Text Source: MedTerms™ Medical Dictionary by MedicineNet, Inc.