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Updated: Jul 2, 2026
08:25
Contact Hypersensitivity as a Murine Model of Allergic Contact Dermatitis
Published on: September 26, 2022
[Severe hematogenous contact dermatitis after oral nickel exposition]
1Klinik und Poliklinik für Dermatologie und Allergologie der Medizinischen Hochschule Hannover, Ricklinger Strasse 5, Hannover, Germany. niebuhr.margarete@mh-hannover.de
Summary
Nickel allergy can cause widespread eczema through the bloodstream, even with avoidance. This condition, known as hematogenous contact dermatitis, requires consideration in patients with severe allergies and persistent skin issues.
Area of Science:
- Dermatology
- Allergy Immunology
- Toxicology
Background:
- A 19-year-old woman with a history of nickel sulfate sensitization and childhood atopic dermatitis presented with persistent periumbilical eczema.
- The patient diligently avoided known nickel exposure, yet experienced a relapse of eczema.
Observation:
- A double-blind, placebo-controlled oral challenge with 5 mg of nickel was administered.
- The challenge elicited a systemic reaction including hematogenous contact dermatitis, fever, and malaise.
Findings:
- Oral nickel challenge confirmed hematogenous contact dermatitis in a nickel-sensitized individual.
- Symptoms resolved promptly with systemic corticosteroids and antihistamines.
Implications:
- Hematogenous contact dermatitis is a potential cause of persistent or relapsing eczema in individuals with strong delayed-type hypersensitivity.
- Clinicians should consider this diagnosis in patients with severe nickel allergy and recalcitrant dermatitis.
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