Related Experiment Video
Updated: Jan 21, 2026

08:25
Contact Hypersensitivity as a Murine Model of Allergic Contact Dermatitis
Published on: September 26, 2022
3.5K
Occupational allergic contact dermatitis from systemic drugs.
Liesbeth Gilissen1,2, Emma Boeckxstaens3, Julie Geebelen3
1Department of Microbiology and Immunology, Laboratory of Dermato-Immunology, KU Leuven, Leuven, Belgium.
Contact Dermatitis
|August 11, 2019
Summary
Occupational allergic contact dermatitis (OACD) in healthcare workers (HCWs) can stem from systemic drugs. A study found 13% of OACD in HCWs was due to systemic drug contact, most commonly in nurses.
Area of Science:
- Dermatology
- Occupational Health
- Pharmacology
Background:
- Healthcare workers (HCWs) and pharmaceutical industry professionals face risks of occupational allergic contact dermatitis (OACD).
- Systemic drugs and their intermediates are identified as potential occupational allergens.
- Previous research highlights the need to identify specific agents causing OACD in these populations.
Purpose of the Study:
- To investigate the demographic profiles of patients with OACD.
- To identify specific systemic drugs causing OACD in patients undergoing contact allergy testing.
- To analyze the period between 2001 and 2019 for trends in drug-induced OACD.
Main Methods:
- Patch testing was performed on 9780 patients using the European baseline series and additional relevant allergens.
- Patients with positive patch-test reactions to systemic medications encountered at work were selected for analysis.
- Demographic data and specific drug sensitizations were recorded for included patients.
Main Results:
- Among 1248 HCWs, 201 (16.2%) had OACD, with 26 (13%) cases attributed to systemic drug contact.
- Nurses (19 cases) were most frequently affected, followed by pharmaceutical chemists (5 cases).
- Tetrazepam, ranitidine hydrochloride, and zolpidem were the most common sensitizing systemic drugs, with 45 positive reactions to 20 different drugs.
Conclusions:
- Systemic drugs are a significant cause of OACD in HCWs, accounting for 13% of cases in this study.
- Nurses represent the highest-risk group for drug-induced OACD.
- Early identification and avoidance of occupational drug exposure are crucial for preventing OACD in HCWs.
Related Concept Videos
Allergic Drug Reactions
1.4K
Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing...
1.4K
Allergic Reactions
32.1K
Overview
32.1K
Contact-dependent Signaling
46.9K
Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...
Gap Junctions
In animal cells, gap junctions are formed...
46.9K
Contact Angle
18.3K
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
18.3K
Second Order systems II
390
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
390
First Order Systems
402
First-order systems, such as RC circuits, are foundational in understanding dynamic systems due to their straightforward input-output relationship. Analyzing their responses to different input functions under zero initial conditions reveals significant insights into system behavior.
When a first-order system is subjected to a unit-step input, its response is characterized by its transfer function. By applying the Laplace transform of the unit-step input to the transfer function, expanding the...
When a first-order system is subjected to a unit-step input, its response is characterized by its transfer function. By applying the Laplace transform of the unit-step input to the transfer function, expanding the...
402

