Medication Summary
Many medications have been used for the treatment of digital mucous cysts. At present, injectable corticosteroids commonly are used, and the most frequently administered agent is triamcinolone acetonide. If a ruptured or partially treated cyst becomes infected, antibiotic therapy with a penicillin or cephalosporin (eg, cephalexin) may be indicated. Silver nitrate and heparin cream also have been used. Currently, no standard doses exist for heparin or for silver nitrate.
Corticosteroids
Class Summary
May result in involution or shrinkage of the cyst. Have anti-inflammatory properties and cause profound and varied metabolic effects. In addition, these agents modify the body's immune response to diverse stimuli.
Triamcinolone (Aristocort)
Used in dermatology for its anti-inflammatory and antipruritic properties. Decreases inflammation by suppressing migration of polymorphonuclear leukocytes and reversing capillary permeability. Dilute with isotonic sodium chloride solution to a concentration of 2.5-5 mg/mL prior to injection. Total quantity injected may be 0.10 mL or less and a 30-gauge needle is used.
Anti-infectives
Class Summary
Treat skin and skin structure infections caused by susceptible organisms.
Cephalexin (Keflex, Biocef)
First-generation cephalosporin arrests bacterial growth by inhibiting bacterial cell wall synthesis. Bactericidal activity against rapidly growing organisms. Primary activity against skin flora; used for skin infections or prophylaxis in minor procedures.
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