Am Fam Physician. 2014 Apr 15;89(8):663-664.
A 78-year-old man with a history of diabetes mellitus and hypertension presented with a four-month history of progressively worsening, painless swelling at the base of his left thumbnail. The swelling was accompanied by a serosanguineous discharge at the cuticle. There was no history of trauma to the area. Treatment with levofloxacin (Levaquin), 500 mg, for 10 days was ineffective.
Physical examination revealed hyperpigmented skin just below the cuticle of the left thumb with swelling (see accompanying figure). The base of the nail appeared fleshy with loss of the cuticle and dystrophy of the nail plate.
Based on the patient's history and physical examination findings, which one of the following is the most likely diagnosis?
A. Chronic paronychia.
C. Herpetic whitlow.
E. Subungual hematoma.
Address correspondence to Charles M. Sow, MD, MSCR, at email@example.com. Reprints are not available from the authors.
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