DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Paronychia infection of the thumb. Close-up of the thumb of a 7-year-old boy, showing pus under the skin caused by an infection around the fingernail. This skin inflammation and infection is known as paronychia. It is usually caused by bacterial infection.
Model release available. Property release not required.