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[Caustic necrosis due to topical formic acid 85% (Objectif ZeroVerrue(®))]
C Lux-Battistelli1, C Muller2, J Moragny3
1Cabinet, 36, rue de Lectoure, 68300 Saint-Louis, France.
Annales De Dermatologie Et De Venereologie
|May 14, 2016
Summary
Formic acid 85% wart treatments can cause severe skin necrosis, especially in young children. Strict adherence to application guidelines is crucial to prevent serious injury.
Area of Science:
- Dermatology
- Wound Healing
- Cutaneous Medicine
Background:
- Formic acid 85% is the active ingredient in Objectif ZeroVerrue(®), an over-the-counter wart removal product.
- The product is indicated for adults and children over four years old, and for younger children under medical recommendation.
- Its proposed mechanism of action involves cellular dehydration and destruction.
Observation:
- Two cases of severe cutaneous necrosis following the application of formic acid 85% are reported.
- One case involved a 3.5-year-old girl with necrosis affecting the middle finger, including the extensor apparatus.
- The severe case necessitated surgical intervention with a fasciocutaneous flap and temporary arthroereisis.
Findings:
- High-concentration formic acid can lead to significant tissue damage, including necrosis.
- Risk of necrosis is elevated in younger children, necessitating medical supervision.
- Improper application, such as occluding the treated area or frequent applications, may increase risk.
Implications:
- Patients must strictly follow the product's precautions for use to avoid adverse events.
- Healthcare providers should be aware of the potential for necrosis and exercise caution when recommending the product, especially for pediatric use.
- Clearer guidelines and warnings may be needed to ensure safe application and prevent severe complications like necrosis.