Ohanyan, T.; Schoepke, N.; Eirefelt, S.; Hoey, G.; Koopmann, W.; Hawro, T.; Maurer, M.; Metz, M. Role of Substance P and Its Receptor Neurokinin 1 in Chronic Prurigo: A Randomized, Proof-of-Concept, Controlled Trial With Topical Aprepitant. Acta Derm Venereol 2017, 98, 26-31.