For sufferers of psoriasis, the hope of finding a satisfactory treatmentoption can be as cyclical as their symptomatic flare-ups. As many as 260,000people in the United States are diagnosed each year with this chronic condition,facing the reality of living without a cure despite the dozens of prescriptionsavailable. Approximately 80 percent of the eight million people in the UnitedStates and Canada diagnosed with psoriasis suffer from plaque psoriasis,which is often as painful emotionally as physically.