Incorporating Patient-Reported Outcomes as a Vital Sign for Dermatologic Clinical Care and Clinical Investigations

Patient-reported outcomes (PROs) provide quantitative assessments of patients' experiences with their skin diseases. PROs are usually much more comprehensive than what can be gleaned from a brief clinical history and more informative than what dermatologists can gather on clinical examination. Correlations between PROs and clinician assessments (e.g., investigator global assessment, PASI) are poor to moderate at best, and therefore data from each source are not redundant and can complement one another. PROs should serve as skin vital signs in dermatology. PROs can offer snapshots of the intensity of a symptom as well as the effects of symptoms, emotions, and functioning on a patient's skin-related QOL. Just as clinicians obtain a baseline blood pressure before starting antihypertensives, dermatology-specific PROs serve as a baseline from which clinicians can monitor (even remotely) for improvement or side effects with treatment and for flares. Both PROs and conventional vital signs are usually normal. It is when they are abnormal or different than expected that they become informative. We conclude by offering a roadmap for investigators to conduct the next steps in PRO research necessary to establish guidelines for transitioning PROs from clinical research and trials to routine clinical use.