DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Mouth ulcer. Aphthous ulcer on the inside of a 78 year old women's cheek. This ulcer is a side effect of the drug methotrexate, which the patient is taking to treat rheumatoid arthritis. The ulcer can be treated with painkilling or steroid lotions.
Model release available. Property release not required.