Medically reviewed by Jurairat J. Molina, MD Allergies are an immune system reaction to substances called allergens. The ...

This heightened reaction is typically directed against harmless antigens, leading to unintended tissue damage. There are four main types of hypersensitivity reactions: Type I, which involves ...

According to the NACDG, neomycin is the third most prevalent allergen that often manifests as a delayed-type contact dermatitis. [25] ...

While they are generally considered safe, recent research has highlighted that PPIs can lead to hypersensitivity reactions (HSRs) in a small percentage of users, estimated to be around 1% to 3% of ...

However, other metal ions as well as bone cement components can cause such hypersensitivity reactions. To complicate things, patients may also develop delayed-type hypersensitivity reactions to ...

The skin is then examined for any signs of a hypersensitive reaction. Image Credit: Neeila/Shutterstock.com Patch testing detects allergic contact dermatitis, a type IV hypersensitivity reaction.

ALLERGIC rhinitis (AR) is a prevalent upper airway condition caused by an IgE-mediated type 1 hypersensitivity reaction to ...

Although the occurrence of allergies to dental resins is low, most methacrylates can nevertheless induce a Type IV (delayed) allergic hypersensitivity reaction. In addition, eugenol-containing ...