Related Experiment Video
Updated: May 20, 2026

08:02
A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
Published on: March 24, 2023
Allergic contact dermatitis to methacrylates in ECG electrode dots
Georgina Lyons1, Rosemary Nixon
1St Vincent's Hospital, Melbourne, Victoria, Australia. georgina.lyons@svhm.org.au
The Australasian Journal of Dermatology
|July 5, 2012
Summary
Allergic contact dermatitis to methacrylates, commonly found in various products, has been reported for the first time in electrocardiogram electrode dots. This finding highlights a new potential allergen in medical devices.
Area of Science:
- Dermatology
- Materials Science
Background:
- Acrylates are prevalent monomers utilized in diverse applications including cosmetics, dental materials, coatings, adhesives, and medical devices.
- Methacrylates, a subclass of acrylates, are known for their use in polymers and resins.
Observation:
- A patient presented with allergic contact dermatitis.
- The dermatitis was linked to the use of electrocardiogram (ECG) electrode dots.
Findings:
- This case represents the first documented instance of allergic contact dermatitis specifically attributed to methacrylates present in ECG electrode dots.
- Patch testing confirmed the patient's sensitivity to methacrylates.
Implications:
- Clinicians should consider methacrylate allergy in patients experiencing dermatitis related to ECG monitoring.
- Manufacturers may need to evaluate materials used in ECG electrodes to mitigate potential allergic reactions.
Related Concept Videos
Drug Toxicity: Allergic Reactions
Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...
Allergic Reactions: Anaphylaxis
Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...
Hypersensitivity Reactions: Immune-Complex Reactions
Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...
Allergic Reactions
Overview

