Oral Submucous Fibrosis

Mouth pain and a reduced sense of taste can accompany the stiffness. As opening becomes more limited, the restriction is called trismus.

Oral submucous fibrosis is usually associated with chewing areca nut, which is an ingredient in betel quid. Its exact cause is still unknown.

This is a chronic, progressive disease. The mouth and throat lining become stiffer, and mouth opening can continue to reduce as fibrous bands develop.

Chewing areca nut is the association most often reported for oral submucous fibrosis. The condition is prevalent in India and Southeast Asia and is rare elsewhere.

The recognised pattern includes burning or pain, loss of taste, blanched fibrous bands, stiff mouth tissues and progressively reduced mouth opening.

There is currently no effective treatment that cures oral submucous fibrosis. Care therefore needs to account for the progressive restriction and the condition's longer-term risks.

Care needs to address a condition that has no effective cure, can progressively restrict mouth opening and carries an increased risk of oral squamous cell cancer.

Oral submucous fibrosis increases the risk of oral squamous cell cancer. A consensus review reports malignant transformation figures of 4% to 7%, while another clinical record gives a wider 3% to 19% range.

Stopping areca-nut chewing is the prevention measure supported by the known association. Prevention strategies also focus on reducing malignant transformation through habit cessation and ongoing surveillance.