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In pyoderma gangrenosum, a blister or nodule on the skin rapidly expands and forms an ulcer, usually on the leg or trunk. The lesion often is quite tender.

Anita Nickson was diagnosed with pyoderma gangrenosum in 2012, two years after she developed a tiny blister on her ankle Andrea Downey Published: 16:10, 6 Feb 2018 Updated: 18:53, 6 Feb 2018 ...

A WOMAN almost died three times after a tiny blister on her ankle turned out to be a life-threatening skin condition that left her with a gaping wound for six years. Anita Nickson, 50, was diagnose… ...