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Comparing patch test positivity after applying it for 24 and 48 hours

Comparison of patch test positivity after 24 and 48 hours of occlusion time in patients of allergic contact dermatitis.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2019/07/020482
Enrollment
100
Registered
2019-07-31
Start date
Unknown
Completion date
Unknown
Last updated
2021-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: L239- Allergic contact dermatitis, unspecified cause

Interventions

Intervention1: Patch test: Patch test application with 24 and 48 hours of occlusion

Sponsors

None listed

Eligibility

Inclusion criteria

Inclusion criteria: Patients of allergic contact dermatitis with age >18 years

Exclusion criteria

Exclusion criteria: a) Patients with active dermatitis on the back i.e the patch testing site. b) Patients applying topical corticosteroids on back or using systemic corticosteroids in the past 1 week. c) Patients with concurrent bacterial, viral or fungal infection at the test site. d) Pregnant or lactating females.

Design outcomes

Primary

MeasureTime frame
Patch test positivity at 48 hours and 96 hours for two different occlusion times of 24 hours and 48 hours.Timepoint: 48 and 96 hours—

Secondary

MeasureTime frame
To assess the concordance rate between the reactions with two different patch test occlusion times.Timepoint: 48 and 96 hours—

Countries

India

Contacts

Public ContactRhea Ahuja

All India Institute of Medical Sciences

prokverma@hotmail.com01126593454

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026