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Related Experiment Videos

Patch testing in discoid eczema.

Sandeep Khurana1, V K Jain, Kamal Aggarwal

  • 1Department of Skin, V.D. & Leprosy, Pt. BDS Post Graduate Institute of Medical Sciences, Haryana, India.

The Journal of Dermatology
|January 18, 2003
PubMed
Summary
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Patch testing is crucial for diagnosing discoid eczema, revealing that 56% of patients reacted to common allergens like potassium dichromate and nickel. Identifying these triggers can significantly improve patient outcomes.

Area of Science:

  • Dermatology
  • Allergology
  • Contact Dermatitis

Background:

  • Discoid eczema is a chronic skin condition requiring accurate diagnosis.
  • Identifying specific allergens is key to managing persistent cases.

Purpose of the Study:

  • To evaluate the utility of patch testing in patients with clinically suspected discoid eczema.
  • To identify common allergens responsible for discoid eczema in the Indian population.

Main Methods:

  • Fifty patients with suspected discoid eczema underwent patch testing using the Indian Standard Patch Test Battery.
  • Patient demographics, occupational history, and clinical presentation were recorded.

Main Results:

  • 56% of patients (28 out of 50) showed positive reactions to one or more allergens.

Related Experiment Videos

  • Potassium dichromate (20%) was the most frequent allergen, followed by nickel (16%), cobalt chloride (12%), and fragrance (12%).
  • Commonly affected areas included hands and feet (44%).

    • Conclusions:

    • Patch testing is a valuable diagnostic tool for discoid eczema.
    • Allergic contact dermatitis is relatively common in patients with severe or persistent discoid eczema.
    • Allergen avoidance can substantially benefit patients.