What Causes Recurrent Mouth Ulcers?

Jun 02, 2022 Source: Cainiu Health

Dr. Zhang Liwen

Introduction

First, traumatic factors should be considered—trauma can also cause oral ulcers. For example, accidentally biting the lip mucosa while eating may lead to an oral ulcer developing from the resulting wound. Second, vitamin deficiency may be a contributing factor; insufficient intake of certain trace elements increases the risk of developing oral ulcers. Additionally, prolonged, excessive physical labor leading to inadequate rest can also trigger oral ulcers.

Some patients repeatedly develop recurrent oral ulcers—these lesions heal after treatment only to reappear, causing significant distress and inconvenience. So, what causes recurrent oral ulcers?

What Causes Recurrent Oral Ulcers?

First, consider traumatic factors: oral trauma can trigger ulcers—for example, accidentally biting the lip or buccal mucosa may lead to ulcer formation at the site of injury.

Second, nutritional deficiencies—particularly of certain vitamins and trace elements—may predispose individuals to oral ulcers. For instance, deficiency in specific micronutrients increases susceptibility. Additionally, prolonged physical overexertion and insufficient rest may also contribute to ulcer development. Furthermore, hormonal imbalances—such as those occurring during menstruation in women—can precipitate oral ulcers. Fluctuations in estrogen or progesterone levels may disrupt endocrine homeostasis, thereby triggering ulceration.

Lastly, deficiencies in essential nutrients—including vitamin B₂ and vitamin C—can also cause oral ulcers. Moreover, chronic occupational stress, excessive mental strain, and inadequate rest weaken the body’s immune defenses, increasing susceptibility to oral ulcers. We hope this information is helpful to you!

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Causes of Recurrent Mouth Ulcers

The most common type of oral ulcer is the aphthous ulcer, also known as recurrent aphthous stomatitis (RAS). The precise etiology of RAS remains unclear but is generally attributed to a triad of factors: genetic predisposition, environmental triggers, and immune dysregulation. In genetically susceptible individuals, environmental factors can provoke an aberrant immune response, leading to the characteristic lesions of oral ulcers—namely, the interplay between genetic and environmental factors.

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What Causes Recurrent Oral Ulcers?

Recurrent oral ulcers are often caused by deficiencies of trace elements such as vitamin B and vitamin C in the patient’s body. In such cases, patients should consume more foods rich in vitamins to replenish these essential micronutrients and thereby address the underlying cause. Additionally, some patients may develop recurrent oral ulcers due to excessive daily stress or poor mental health.

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What Causes Recurrent Mouth Ulcers?

The exact cause of oral ulcers remains unclear; however, the majority of cases are associated with psychological factors such as mental stress, anxiety, and poor sleep. Additionally, local irritants—including residual tooth roots or crowns, ill-fitting dental restorations, and dental calculus—can also contribute. Trauma is another potential cause: for instance, accidentally biting the lip mucosa may lead to ulcer formation at the site of the wound.