avoidance of some allergens, including corticosteroids, thiurams and 4-tert-butylphenol formaldehyde resin, is not possible.
CONFLICT OF INTEREST STATEMENTLaurence Mainville has no conflict of interest to declare. Marie-Claude Houle received speaker's fees from Sanofi. Hélène Veillette received speaker's fees from AbbVie, Janssen, Novartis, Sanofi Genzyme, Bausch Health and Sun Pharma. She worked on advisory committees (Novartis, Sandoz, Pfizer, Sanofi Genzyme, Sun Pharma and UCB), and contributed to clinical trials (Sanofi, GlaxoSmithKline, Bellus Health, AnaptysBio, Boehringer-Ingelheim, Abbvie and Moderna).
ETHICS STATEMENTInformed written consent was obtained regarding included images.