What is lacking in the body when mouth ulcers occur frequently?

Written by Li Cui
Dentistry
Updated on May 03, 2025
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Frequent occurrences of oral ulcers may indicate a deficiency of certain nutrients or trace elements in the body, leading to a decreased resistance to infections. When the immune system is compromised, oral ulcers can occur. However, if a patient frequently suffers from oral ulcers, it is advised to seek medical attention early to rule out other causes of the ulcers, such as other systemic diseases that could also lead to recurrent ulcers and inflammation. It is important for the patient to undergo thorough examinations. Additionally, if a patient has been taking certain medications over a long period, this might also lead to recurring oral ulcers. Therefore, it is crucial for patients to maintain a light diet, consume fresh vegetables and fruits, relax and avoid excessive stress. Moreover, maintaining good oral hygiene is essential and patients should cultivate proper oral care habits.

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Written by Li Bao Hua
Dentistry
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How many days does it usually take for oral ulcers to heal?

Oral ulcers occur on the mucous membranes of the mouth and are a common disease caused by low immunity, or a lack of vitamins and trace elements, leading to a mucosal disease of the mouth. Generally, oral ulcers can heal on their own in about 14 days, or two weeks. If the ulcers do not improve after two weeks, a biopsy is necessary to avoid potential malignancy. Oral ulcers may also be due to sharp tooth cusps or dental roots within the mouth, which are referred to as traumatic ulcers; these can be examined. If dental roots or other irritating factors are present near the ulcer, it is important to promptly remove these external irritants. Oral ulcers that do not heal on their own after two weeks require further biopsy.

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Written by Zhang Shu Kun
Traditional Chinese Medicine
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Can stomach fire cause oral ulcers?

When there is excessive stomach fire, it can cause oral ulcers. This is because excessive stomach fire leads to poor digestion in the gastrointestinal tract, where food cannot be digested in time and regurgitates into the mouth. It can also cause throat pain and oral inflammation, so it is crucial to treat stomach fire promptly. For severe cases, medication that improves stomach fire should be taken, and for mild cases, the condition can be managed through diet. Eating more watermelon, apples, and similar foods can help reduce stomach fire. Most importantly, avoid alcohol, smoking, and staying up late. (Medication should be taken under the guidance of a professional doctor.)

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Written by Fang Xiao
Dentistry
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What fruits are good to eat for oral ulcers?

If you have mouth ulcers, you should eat more apples, pears, watermelon, dragon fruit, cherry tomatoes, and kiwifruit. These are rich in vitamin C and complex B vitamins, which can effectively promote the healing of ulcers. This is because they can promote the synthesis of collagen, allowing the ulcer surface to heal quickly. Additionally, it is beneficial to consume more fibrous foods, such as green vegetables, leeks, and celery, to supplement dietary fibers and vitamins needed by the oral cavity. This can help in the recovery from mouth ulcers and also prevent frequent occurrences. It is advisable to avoid spicy and stimulating foods, consume fewer tropical fruits like lychee and longan, avoid staying up late, and maintain regular bowel movements.

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Written by Li Cui
Dentistry
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What should be used for oral care when oral ulcers are severe?

When patients suffer from severe oral ulcers, they can purchase some mouthwash for daily use. Some mouthwashes are specifically designed for rinsing and can sterilize the mouth, eliminate odors, and reduce inflammation. Therefore, it is recommended that patients brush their teeth timely in the morning and evening and use mouthwash appropriately. They should also remove food residues promptly after meals. Additionally, patients must pay attention to their daily lives and avoid consuming overly spicy, hard, or hot foods. It's important to protect the mucous membranes inside the mouth, as these tissues are delicate and cannot withstand prolonged strong irritations. Particular caution should be taken with corrosive foods because they can also cause irritation in the mouth.

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Written by Huang Kun Mei
Pediatrics
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Causes of Baby's Oral Ulcers

Baby's oral ulcers generally are considered under the following circumstances: The first type is caused by infections, such as viral infections, herpes, etc.; the second type might be due to a deficiency in vitamins or trace elements, such as when children are picky eaters, which can lead to poor nutrition and vitamin deficiencies. The third type is traumatic oral ulcers which might occur if the child does not often chew hard objects; these are the general scenarios. We should always encourage children to eat fresh vegetables and fruits to prevent the occurrence of oral ulcers. Since vitamin deficiency is the most common cause of oral ulcers, it is important to consume fresh vegetables and fruits and avoid habits like children biting their fingers or eating random items, which might cause infection-induced ulcers. If the child uses medicine spray like "Kaikoujian", and it works well, that's adequate for home observation. If after using the medication and increasing the intake of vegetables and fruits, the results are not ideal, then it is necessary to visit the hospital promptly. (The use of medications should be under the guidance of a physician.)