The most common causes of prolonged mouth ulcers are immune deficiency, lack of attention to oral hygiene and irritation, cancerous ulcers, and heavy aphthous ulcers.
1. Low immunity: patients with immune problems have a high chance of bleeding from mouth ulcers, and patients with low immunity will have acne attacks or long-term appearance after mouth ulcers appear.
2. Not paying attention to oral hygiene and stimulation: in daily life, if you don’t pay attention to your oral hygiene, don’t brush and rinse your teeth on time, have bad tooth stimulation or eat spicy food for a long time to stimulate your mouth, you will have long time mouth ulcers which are hard to heal.
3. Cancer ulcers belong to a type of oral cancer with unclear boundary, mainly caused by heredity, tobacco, alcohol and betel nut addiction, poor oral hygiene, malnutrition and infection.
4. Heavy aphthous ulcers are the most serious oral ulcers, the beginning of the manifestation is similar to the light type, but the ulcers expand quickly and the pain symptoms are obvious, usually the ulcers can only be healed in a few weeks to 1-2 months, and the etiology is similar to the above mentioned.
In addition, some patients have prolonged mouth ulcers caused by infections, and it is recommended that patients with mouth ulcers that have not healed in 1-2 weeks seek medical attention as soon as possible to avoid delays in their condition.