Although it was first reported in 1880, there has been little research conducted on prurigo nodularis (PN), an inflammatory chronic skin disorder characterized by firm, intensely itchy nodules that appear across the arms, legs and torso. PN disrupts the sleep and quality of life of those afflicted, and while its cause is largely unknown, it’s often linked to additional health complications such as cardiovascular disease, chronic kidney disease and type 2 diabetes. It also disproportionately affects African Americans.