- Patients: = no prior topical steroid or superpotent topical steroids for less than 16 days using the same or equivalent dosage as the one used in the study a different regimen and this regardless of the clinical resultsOR receiving potent or superpotent topical steroids for at least 16 days with a different regimen than that used during the trial AND not controlled by this treatment (appearance of at least 3 new blisters per day)