A mucous cyst develops when the mouth’s salivary glands become plugged with mucus. While they’re usually temporary and painless, they can become permanent if not treated. What are mucous cysts?

lip, vagina, the urethral opening and the anus. Some mucous membranes secrete mucus, a thick protective fluid. The function of the membrane is to stop pathogens and dirt from entering the body and to ...

and lip mucosa (5.9%). Symptoms were recorded in 53.9% of the OLP patients. Skin involvement was found in only 6.9%.