Treatment Options for Mouth Ulcers Under the Tongue
Some patients with oral ulcers develop lesions on the tongue. The reason why ulcers occur specifically on the underside of the tongue remains unclear—so what causes oral ulcers beneath the tongue?
Oral Ulcers Beneath the Tongue
The causes of oral ulcers beneath the tongue are relatively complex. Trauma is one possible factor—for instance, accidentally biting the tongue while eating or speaking may injure the oral mucosa and subsequently trigger ulcer formation.

Additionally, deficiencies in micronutrients—including vitamin B₂ and vitamin C—may compromise immune function and predispose individuals to oral ulcers. Chronic physical and mental stress, such as prolonged work hours without adequate rest, can also weaken the body’s resistance and contribute to ulcer development. Regular consumption of spicy, irritating, or large, coarse foods further increases ulcer risk. Moreover, impacted or complicated wisdom teeth, or residual tooth roots, may traumatize the oral mucosa and lead to ulceration.

Patients experiencing oral ulcers should maintain rigorous oral hygiene—for example, rinsing the mouth with warm saline solution. If discomfort or other symptoms arise, prompt medical evaluation is essential. A qualified healthcare professional should conduct a thorough examination and provide appropriate management. We hope this information proves helpful!