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Contact urticaria to O-phenylphenate.
Annals of Allergy
|January 1, 1986
Summary
Contact urticaria, an immediate hypersensitivity reaction, is increasingly common. This case highlights an unusual reaction to ortho-phenylphenate in plaster cast material, a preservative not previously linked to this condition.
Area of Science:
- Dermatology
- Allergy and Immunology
- Toxicology
Background:
- Contact urticaria represents an immediate hypersensitivity reaction.
- The incidence of contact urticaria is rising.
- Plaster cast materials are commonly used in orthopedic settings.
Observation:
- An unusual case of contact urticaria was observed.
- The reaction presented as an immediate hypersensitivity.
- The trigger was identified as a component within the plaster cast material.
Findings:
- The specific causative agent was identified as ortho-phenylphenate.
- Ortho-phenylphenate is a preservative agent.
- This marks the first reported instance of ortho-phenylphenate causing contact urticaria.
Implications:
- This finding expands the known allergens associated with contact urticaria.
- Healthcare providers should consider ortho-phenylphenate in plaster casts as a potential cause of allergic reactions.
- Further investigation into the prevalence and mechanisms of ortho-phenylphenate-induced contact urticaria is warranted.