I always face problem during summer due to mouth blister. What is the main causes of mouth blister. How we can prevent this mouth blister and which medicine we can use for it.

Question

Most commonly, mouth sores?which include canker sores?are a minor irritation and last only a week or two. In some cases, however, they can indicate mouth cancer or an infection, such as herpes simplex virus. Herpes simplex causes cold sores, or fever blisters, and is highly contagious. The exact cause of most mouth ulcers is unknown. Stress or tissue injury is thought to be the cause of simple mouth ulcers. Certain foods, including citrus or acidic fruits and vegetables (such as lemons, oranges, pineapples, apples, figs, tomatoes and strawberries), can trigger a mouth ulcer or make the problem worse. Sometimes a sharp tooth surface or dental appliance, such as braces or ill-fitting dentures, might also trigger mouth ulcers.
Some cases of complex mouth ulcers are caused by an underlying health condition, such as an impaired immune system; nutritional problems, such as vitamin B12, zinc, folic acid, or iron deficiency and gastrointestinal tract disease, such as coeliac disease and Crohn's disease.

Sajeev Kumar · Accepted Answer

Most commonly, mouth sores?which include canker sores?are a minor irritation and last only a week or two. In some cases, however, they can indicate mouth cancer or an infection, such as herpes simplex virus. Herpes simplex causes cold sores, or fever blisters, and is highly contagious. The exact cause of most mouth ulcers is unknown. Stress or tissue injury is thought to be the cause of simple mouth ulcers. Certain foods, including citrus or acidic fruits and vegetables (such as lemons, oranges, pineapples, apples, figs, tomatoes and strawberries), can trigger a mouth ulcer or make the problem worse. Sometimes a sharp tooth surface or dental appliance, such as braces or ill-fitting dentures, might also trigger mouth ulcers.
Some cases of complex mouth ulcers are caused by an underlying health condition, such as an impaired immune system; nutritional problems, such as vitamin B12, zinc, folic acid, or iron deficiency and gastrointestinal tract disease, such as coeliac disease and Crohn's disease.