BOSTON — The American Contact Dermatitis Society (ACDS) has selected aluminum as the Allergen of the Year for 2022. Aluminum salts, which are the major cause of allergic reactions, are "ubiquitous," said Donald Belsito, MD, a professor of dermatology at Columbia University in New York City during his presentation here at the annual ACDS meeting.
These salts can be found in sunscreen, cosmetics, dental restorations, and food, to name a few, though the most commonly identified reactions are from aluminum hydroxide, which can be found in some vaccines or preparations for allergen-specific immunotherapy. "It's the aluminum hydroxide that seems to be more allergenic than other aluminum salts," Belsito told Medscape Medical News.
"It's not a dangerous allergy; It's not a threat," he said, "but it's something that dermatologists need to be aware of."
These reactions normally present as itchy nodules that can last for months and even years, like some reactions from patch testing. "We're not talking about a vaccine allergy in such a way where people are getting anaphylaxis," JiaDe Yu, MD, a pediatric dermatologist specializing in allergic contact dermatitis at Massachusetts General Hospital in Boston, told Medscape Medical News"An itchy rash is what we tend to see."
