Chronic itch—known clinically as chronic pruritus—is characterized as an unrelenting and sometimes even debilitating sensation to itch, and often lowers the quality of life for those who suffer with it. Treating the condition has been difficult because there are few Food and Drug Administration-approved therapies. Now, a recent case study by Johns Hopkins Medicine researchers provides evidence that a promising option for patients with chronic itch may already be available: medical marijuana (cannabis).