The close resemblance between patients with severe alopecia areata and those with cancer: What hair tells us about wellness or grave illness.

Competing Interests: Conflicts of interest Dr King has served on advisory boards, is a consultant, and/or is a clinical trial investigator for AbbVie, Aclaris Therapeutics, Inc, AltruBio Inc, Almirall, Arena Pharmaceuticals, Bioniz Therapeutics, Bristol-Meyers Squibb, Concert Pharmaceuticals, Inc, Dermavant Sciences, Inc, Eli Lilly and Company, Incyte Corp, LEO Pharma, Otsuka/Visterra, Inc, Pfizer, Inc, Regeneron, Sanofi Genzyme, TWi Biotechnology, Inc, and Viela Bio, and is on speaker bureaus for Pfizer Inc, Regeneron, and Sanofi Genzyme. Dr Craiglow has received honoraria and/or fees from Aclaris, Arena Pharmaceuticals, Eli Lilly, Regeneron, Sanofi Genzyme, and Pfizer. Author Borges has no conflicts of interest to declare.