Armstrong has been a consultant, advisory board member, and/or speaker for Abbvie, ASLAN, Almirall, Amgen, Arcutis, Beiersdorf, BMS, Boehringer Ingelheim, Dermavant, EPI Health, Eli Lilly, Galderma, Incyte, Janssen, LEO Pharma, Mindera, Nimbus, Organon & Co, Regeneron, Sanofi, Sun Pharma, Parexel, Takeda, UCB, and Ventyx Biosciences; has received grants/research support from Abbvie, ASLAN, BMS, Dermavant Sciences, Dermira, Eli Lilly, Galderma, Incyte, Janssen, LEO Pharma, Meiji Seika Pharma Co, Modernizing Medicine, Nimbus Therapeautics, Novartis, Ortho Dermatologics, Pfizer, Sanofi Genzyme, UCB, and Ventyx Biosciences; and is the Board of Director Elect at the American Academy of Dermatology.