Can oral ulcers cause dry mouth and a dry tongue?

Oral ulcers may cause dry mouth and thirst. This symptom is mainly caused by the following factors: 1. Oral mucosal inflammation: Oral ulcers cause ulcerative damage to the oral mucosa, accompanied by symptoms such as keratosis, congestion, swelling, and erosion. This inflammation accelerates the evaporation of moisture within the mouth, leading to a dry oral environment. 2. Pain affecting fluid intake: Oral ulcers often cause significant pain, especially when they occur on sensitive areas such as the tongue. This pain may interfere with normal eating and drinking, reducing fluid intake and exacerbating the sensation of dry mouth and thirst. 3. Deficiency of trace elements: A deficiency in certain trace elements or vitamins (such as vitamin B2) may also lead to oral ulcers. Inadequate levels of these nutrients further compromise the health of the oral mucosa, contributing to symptoms such as thirst and dry mouth. If you have any concerns, please consult a healthcare professional.