Delayed warfarin induced skin necrosis in a patient with poor warfarin metabolizing activity due to interrupted warfarin therapy

I would hope your doctor is telling you about this side effect. I don't like the word necrosis. You'll have to read this at the link since its an image rather than text.
http://resources.metapress.com/pdf-preview.axd?code=y7840271tx4q8715&size=largest
Warfarin-induced skin necrosis (WISN) is a rare but potentially devastating complication of
oral anticoagulation occurring within 3-10 days of warfarin therapy. Potential causes of
WISN include overdose of warfarin, drugs which affect liver function, acquired or