What are the symptoms of oral mucosal diseases?

Oral mucosal diseases can cause symptoms such as pain and numbness. The main manifestation of oral mucosal lesions is spontaneous pain. Irritation-induced pain is generally milder than spontaneous pain and is typically triggered by activities such as speaking, drinking water, or eating. Oral mucosal lesions may also lead to local itching, roughness, discomfort, diminished taste sensation, and numbness in the mouth.