1 Kimberly and Eric J. Waldman Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY; Mark Lebwohl Center for Neuroinflammation and Sensation, Icahn School of Medicine at Mount Sinai, New York, NY; Marc and Jennifer Lipschultz Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY; Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY; Allen Discovery Center for Neuroimmune Interactions, Icahn School of Medicine at Mount Sinai, New York, NY. Electronic address: itchdoctor@mountsinai.org.