Ulcers, cracks and sores are common in the mouth and usually they go away after a few days. However, when there are internal diseases, mouth ulcers, sores and cracks can be just the alarm bells you need. A recent study , conducted by Dan Baumgardt, University of Bristol, suggests that our mouth issues may actually be means of communication for the body to show that something more sinister is lurking.

Mouth ulcers: Pesky mouth ulcers are very common. They usually show up in the inner lining of the mouth or the tongue and can be extremely irritating. Aphthous ulcers are round or swollen in nature, and usually start off yellow before turning grey in colour.

Usually, ulcers do not last very long and can be treated with simple painkillers. Sometimes mouthwashes and sprays can help too. One of the most common causes of mouth ulcers is physical injuries due to bite in the inner cheeks and tongue.

Hormonal disruption and vitamin deficiencies are also responsible. However, when mouth ulcers persist longer than three weeks, they should be treated immediately. Mouth ulcers near to the back of the throat, more than one centimeter in diameter and refusing to recover after three weeks can indicate oral cancer.

ALSO READ: Mouth ulcers: Home remedies to get rid of mouth sores Recurrent ulcers: While mouth ulcers and sores are extremely common, when they keep frequently happening over a short time, it should be taken seriously. Sometimes mouth ulcers can be caused by diseases that can affect .