A system and a method for performing a cost-utility analysis of pharmaceutical interventions where each pharmaceutical intervention is associated with several potential health states. A switching knob is mounted to the rotary shaft and a surface of the control switch. The beam of radiation is delivered to the target region of skin to affect at least one pigmentary abnormality disposed in an epidermal region of the target region and at least one vascular abnormality disposed in a dermal region of the target region.