The patient will be given oral instructions regarding the application of topical dapsone gel, 5% by the PI on the day of enrollment. The PI will apply the first treatment to the randomized extremity during the first clinic visit. The patient will then remain in the treatment room for fifteen minutes to evaluate for any immediate adverse reaction. The PI will remain in the room with the patient. At the end of the fifteen minute evaluation, the patient will be sent home with written instructions for application and a 30gm tube of ACZONE™ (dapsone) Gel, 5%. Patients will apply the study drug to the indicated elbow or knee each morning and evening for the two weeks. They will return to the dermatology clinic in two weeks and be seen in a private clinic room by the PI for a follow up visit. At that time, photographs, lesion counts and measurements will be taken again, just as they were at the initial visit. The patient will be asked to report any adverse events at that time. Patients will be instructed to continue treatment and follow up in two weeks. The same parameters will be evaluated at the four week visit and again at the six week visit, which will be the completion of the study.