Paronychia (pahr-uh-NIK-ee-uh) is an infection of the skin around a fingernail or toenail. The infected area can become swollen, red, and painful, and a pus-filled blister (abscess) may form. Most of ...

No matter what's behind a cut, it can be helpful to know whether it's infected – and how to prevent ... problems unless ingested by putting a finger that's been contaminated by germs in close ...