A felon can lead to a pocket of pus (abscess) inside the fingertip, which creates pressure on and causes death of nearby tissues. The fingertip becomes very warm, swollen, and firm with intense throbbing pain.
The doctor makes the diagnosis of felon by examining the affected finger.
(See also Overview of Hand Disorders Overview of Hand Disorders Hand and finger disorders include ganglia, deformities, disorders related to nerves or blood vessels, osteoarthritis, trigger finger, Kienböck disease, and infections. Some other disorders that... read more .)