“…Prednisone In the patient described herein, sodium iodide I 125 therapy had been administered during the most recent admission, but had not been given at the time of initial presentation of pyoderma gangrenosum. In the setting of (1) negative bacterial cultures of lesion and blood, (2) lack of response to antibiotics, (3) pathergy, (4) iodine exacerba¬ tion, (5) evolving clinical picture, (6) history of similar lesions with residual scarring, (7) biopsy findings, (8) rapid response to prednisone, (9) and a residual cribriform scar after healing, the diagnosis of pyoderma gangrenosum was firmly established in this patient.…”