| As a result of hypertrophic scarring in the circumoral tissues, constriction of scar tissue can lead to aesthetic and functional problems, causing deformity and affecting facial expression. |
| The circumoral nerve ring runs round the mouth and sends fibres to innervate the peristome, mouth and oesophagus. |
| The first symptoms are usually circumoral paresthesia, numbness of the tongue, lightheadedness, hyperacousis, tinnitus and visual disturbances. |
| Ten circumoral appendages are present, the 4th being the longest pair, and is retractile into pockets at the ventrolateral sides of head. |
| The first symptoms are circumoral paresthesia, numbness of the tongue, lightheadedness, hyperacusis and tinnitus. |
| The oral commissure prosthesis is used to prevent microstomia when trauma involving the corners of the mouth or circumoral tissue has occurred. |
