Allergic contact dermatitis from natural latex.

Area of Science:

• Dermatology
• Allergology
• Occupational Health

Background:

• Natural latex allergy reports have increased, presenting as various reactions from skin to respiratory issues.
• Previous US studies lacked detailed data on hand eczema and contact allergy outcomes.
• This study aimed to determine the prevalence of type IV hypersensitivity to latex in patients with suspected rubber allergy.

Purpose of the Study:

• To investigate the prevalence of type IV hypersensitivity to natural rubber latex (NRL).
• To evaluate the diagnostic utility of patch testing for NRL allergy.
• To assess the clinical outcomes of patients with confirmed latex hypersensitivity.

Main Methods:

• 167 patients with hand eczema and rubber product contact underwent patch testing with NRL and rubber components.
• Testing included standard screening, rubber series, and pure NRL.
• Patient data, including allergy tests and follow-up, were analyzed for NRL-positive cases.

Main Results:

• Four patients (2.4%) showed positive patch test results to NRL, indicating type IV hypersensitivity.
• One patient also had a type I reaction to NRL, confirmed by prick testing.
• All four patients experienced healing of contact eczema after eliminating latex exposure.

Conclusions:

• The prevalence of type IV hypersensitivity to latex was 2.4% in this patient cohort.
• Patch testing with NRL and rubber additives is recommended for suspected rubber-induced contact dermatitis.
• Early diagnosis and elimination of latex products are crucial for managing latex allergy.