Had mouth biopsy. diagnosis:lichenoid mucositis consistent with lichen planus. plz explain. i'm scared

Don't be scared!: Think of lichen planus as a benign skin rash in your mouth. It can triggered by the immune system. There may be several contributing factors, and each case is different. Potential causes include: viral infections, allergens, stress, genetics, etc... Most people will have some form of lichen planus in their lifetime. If you case becomes painful or much worse, have a dentist take a look at you.