Is oral lichen planus a common disease?

Oral lichen planus is a common chronic oral mucocutaneous disease. It is a non-infectious chronic inflammation. The etiology is unknown. It may be related to endocrine, immune, infection and other factors. It is a precancerous state. It is an inflammatory disease of the skin and mucosa of the mouth, cheeks, gums, lips and tongue. It is caused by autoreactive T lymphocyte mediated damage to epithelial basal cells. It can be treated with glucocorticoids, vitamin A acids and cyclosporine. Corticosteroids can be injected into local skin lesions. The above health science knowledge is for reference only. If necessary, please go to the hospital for timely examination and treatment.