The intense pain associated with a felon occurs because of
|B||a closed space infection|
|C||digital artery thrombosis|
|D||nail bed involvemen|
a. Felon is an expanding abscess within the finger pulp, and represents up to one-quarter of hand infections. Felons can be extremely painful, as the expanding abscess produces a localized compartment syndrome within the fibrous septae that normally anchor the pulp and subcutaneous tissues to the distal phalanx.
b. Felons usually are caused by penetrating direct trauma producing bacterial inoculation.
c. Untreated felons,compromise local circulation and produce secondary tissue ischemia and necrosis (osteomyelitis and septic DIP arthritis), in addition to septic destruction.
d. In surgical drainage, additional injury to the finger pulp should be avoided, but an abscess may already point to a superficial location
e. Herpetic whitlow is an infection of the soft tissues of the distal phalanx or paronychial area by the herpes simplex virus. It is characterized by intense pain and cutaneous vesicles or blisters. Surgical interventions may spread the herpes virus systemically or dispose to local secondary bacterial infection.
f. Only bacterial abscess needs surgical drainage. Herpetic whitlow is self-limited, generally resolving within 3 to 4 weeks.