What causes mouth sores

Health experts say mouth sores, also known as oral ulcers, can result from various causes, including stress, minor mouth injuries, hormonal changes, or certain foods that irritate the mouth lining.

They may also develop due to infections, poor oral hygiene, or deficiencies in vitamins such as B12, folate, and iron.

Some cases are linked to medical conditions like celiac disease or immune system disorders.

While most mouth sores heal within one to two weeks, persistent or painful ulcers may require medical attention.

Doctors advise avoiding spicy foods, maintaining good oral hygiene, and staying hydrated to help prevent recurrence.