Warfarin sodium-induced skin necrosis

Area of Science:

• Dermatology
• Pharmacology
• Internal Medicine

Background:

• Skin necrosis is a rare but serious adverse effect associated with coumarin derivative anticoagulants.
• First identified in 1952, approximately 200 cases have been documented globally, with only 73 in English literature.
• The typical presentation involves adipose tissue in middle-aged women, progressing from petechiae to gangrenous necrosis within 3-6 days of warfarin initiation.

Observation:

• This report details a unique case of warfarin-induced skin necrosis.
• The patient experienced the onset of cutaneous necrosis 46 days after commencing warfarin sodium therapy.
• This represents a significantly delayed presentation compared to the commonly observed timeframe.

Findings:

• Warfarin sodium therapy can lead to skin necrosis.
• The onset of necrosis can be significantly delayed, occurring beyond the typical 3-6 day window.
• This case challenges the established timeline for warfarin-induced skin necrosis.

Implications:

• Clinicians should maintain a high index of suspicion for warfarin-induced skin necrosis even with delayed onset.
• This case expands the understanding of the temporal spectrum of this rare complication.
• Further research may be warranted to explore factors contributing to delayed warfarin-induced skin necrosis.