It is mostly occur in inside the cheeks. If the blisters are accompanied by fever, or if the blisters last for more than three weeks or cause difficulty in swallowing, consult a doctor immediately. There are many causes of mouth ulcers, including injury to the mouth, eating spicy foods, vitamin deficiencies, hormonal imbalances, stress or "autoimmune disorders: diseases caused by disturbances in the immune system".  Most mouth ulcers do not require treatment; they get better on their own. There are some home remedies and remedies you can try, including over-the-counter medications, mouthwashes, and over-the-counter medicines to help ease the pain and help you recover more quickly.

Types of Mouth Ulcer

Mouth ulcers are not contagious and are classified into three types:

  1. Small blisters

Their size is between 3 and 10 millimetres and they are very common types of blisters. They get cured within 10 to 14 days and they do not leave any marks.

  1. Large blisters

These blisters are larger and darker than small ulcers; their width is more than 10 mm, these ulcers take a few weeks to a few months to heal.

  1. Herpetiform sores

The size of these blisters is very small (2-3 mm), but up to 100 such blisters can gather at a time. It heals without leaving a mark; a group of many small ulcers is called Herpetiform blisters.

Symptoms of mouth ulcers

Burning, tingling, prickling feeling for 24 hours before blister formation, the blister is white, grey or yellow in colour, it has a red border and most blisters are painful, there is difficulty in speaking and chewing and swallowing food.

Apart from this, some such symptoms of mouth ulcers which are less visible, but their presence indicates a serious problem, these symptoms are as follows:

  1. Fever
  2. Swollen lymph nodes
  3. To be lethargic
  4. weight loss
  5. Fungal infection of mouth or throat

Mouth Ulcer Causes

  • Mouth ulcers can possibly be due to these.
  • Minor scratches during dental work, excessive brushing, and injury during sports, accidentally biting cheeks
  • Allergic reaction to bacteria found in the mouth
  • Helicobacter pylori bacteria, which cause stomach ulcers
  • Hormonal changes during menstruation
  • Emotional stress


Although there is no cure for mouth ulcers and they tend to recur, they are can be reduced the following methods are important

  1. Avoid food that harms your mouth, such as spicy food.
  2. Do not chew chewing gum because it also increases the chances of getting mouth ulcers.
  3. Brush teeth daily with a soft-bristled brush and remove food stuck between teeth with floss after eating this will reduce the chances of blisters.
  4. Take care of your mouth, and try not to get any kind of injury or scratch.

Diagnosis of Mouth Ulcer

Mouth ulcers do not require any special tests, your doctor or dentist. They will be recognized only at the time of inspection.

In some cases, tests may be needed to rule out other health problems, especially when the blisters are severe or recurrent. In this case, a blood test or a biopsy of the mouth may be needed or when the doctor thinks that you may have any of the following problems: Viral infection, vitamin or mineral deficiency.

Treatment of mouth ulcers

Most of the treatment is not needed if the mouth ulcers are small; they get better on their own in a week or two weeks. But large and recurring painful ulcers require medical care.

  1. Pharaceutical Mouth Wash: If your condition is severe, your doctor will ask you to gargle with a medicated mouth wash several times a day. This medicine reduces pain and burning.
  2. Cold sores and other medicine: There are many paste creams, gels or liquids available that can help in quick relief and healing of blisters. Their effect is greatest when they are applied immediately after the blister. Consult your doctor to know which the right medicine is for you.