Aphthous ulcer. Close-up of a large aphthous ulcer (mouth ulcer) seen on the underside of a patient's tongue. This white ulcer is surrounded by red inflamed tissue. Aphthous ulcers usually occur on the mucous membrane inside a cheek or lip or on the underside of a tongue. The small painful sores can last up to two weeks before disappearing. The cause of aphthous ulcers is not understood,although they may be triggered by injury (for example,by a toothbrush) and some- times contain streptococcus bacteria. Treatment is palliative,consisting mainly of soothing ointments and painkillers | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Marazzi, Dr. P. |
Taille de l’image : | 3230 px × 2236 px |
Model Release : | Disponible |
Property Release : | Non requis |
Restrictions : |
|