Oral lachen planus dangerous?

Possibly: May increase your risk for developing squamous cell carcinoma from being chronically inflamed. May also be seen more commonly in patients with hepatitis C so get checked. I would see a doctor, get a little steroid cream such as Lidex (fluocinonide) gel to reduce the inflammation, get your blood tested, and get regular oral exams looking for non-healing ulcers or nodules. It is not contagious so kiss away.

Rarely oral cancer: Chronic oral lichen planus can in a small percentage develop oral cancer. Topical prescription creams such as retin a (tretinoin) can be used in the mouth to treat oral lichen palnus. I have experience with oral Metronidazole as a treatment for lichen planus with good results. You need to be checked for hepatitis C which can be associated with lichen planus as well as review drugs as contributory cause.