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Mouth ulcers can develop for many different reasons. In many cases, a single ulcer results from minor irritation, while recurring ulcers may have several contributing factors.
Understanding what causes mouth ulcers can help you identify possible triggers and better support your oral health.
The best way to manage a mouth ulcer is to address its underlying cause. Whether it’s due to injury, stress, braces, or nutritional deficiencies, treating the trigger can help support healing and reduce the risk of future ulcers.
One of the most common causes is accidental injury inside the mouth.
Examples include:
Even small injuries may trigger an ulcer in sensitive individuals.
Many people notice mouth ulcers appearing during stressful periods.
Although the exact relationship isn’t fully understood, emotional stress and fatigue are recognised as common triggers for recurrent ulcers.
Some recurring ulcers may be associated with deficiencies in nutrients such as:
A balanced diet supports overall oral health. If deficiencies are suspected, a healthcare professional may recommend testing.
Hormonal fluctuations may contribute to mouth ulcers in some individuals.
Some people notice ulcers occurring:
Certain foods may irritate sensitive areas inside the mouth.
Possible triggers include:
Triggers vary between individuals.
Some medicines may contribute to mouth ulcers as a side effect.
If ulcers appear after starting a new medication, discuss this with your doctor or pharmacist rather than stopping medication on your own.
Occasionally, recurring or persistent mouth ulcers may be associated with underlying health conditions.
These can include:
Most ulcers are not caused by serious illness, but persistent symptoms should always be assessed professionally.
Some people appear to be genetically more prone to developing recurrent mouth ulcers.
Having close family members who experience ulcers may increase your likelihood of developing them.
You may be able to reduce irritation by:
While identifying the cause is important, protecting the ulcer from everyday irritation may also help improve comfort.
UlcerEze mouth ulcer patches create a protective barrier over sensitive areas, supporting your oral care routine throughout the day.
Recurring ulcers may result from several factors including stress, nutritional deficiencies, minor trauma, or genetic predisposition. If ulcers occur frequently, consult a healthcare professional.
Stress is widely recognised as a common trigger for recurrent mouth ulcers in many people.
Certain foods may trigger or worsen irritation in sensitive individuals, although triggers vary from person to person.
