Medical Definition of whitlow
1: an infection of the finger and especially the fingertip that is typically caused by infection of a virus (as the herpes simplex virus) and is marked by redness, tenderness, and fluid-filled blisters <It is important to distinguish herpetic whitlow from bacterial felon or paronychia, as herpetic whitlow is a self-limited infection for which surgical incision is not indicated.—H. M. Feder, Jr. and S. S. Long, American Journal of Diseases of Children, September 1983>
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