Targeted Testing for Delayed Skin Allergies and Contact Dermatitis

Patch testing is a specialized diagnostic tool used to identify delayed allergic reactions caused by contact with specific substances. At Yeongjong Central Dermatology Clinic, we offer patch testing for patients with persistent eczema, rashes, or reactions to personal care products, metals, or workplace exposures. Accurate results help eliminate triggers and guide long-term skin health strategies.

What Is Patch Testing?

Patch testing is designed to detect allergic contact dermatitis, a condition where the skin develops redness, itching, or inflammation days after coming into contact with an allergen. It evaluates delayed hypersensitivity reactions, unlike prick or blood tests which measure immediate allergies. Patch testing is commonly used to identify sensitivities to:

• Fragrances and preservatives in cosmetics
• Metals like nickel or cobalt in jewelry and clothing accessories
• Hair dyes, adhesives, or rubber chemicals
• Ingredients in skincare, sunscreens, and topical medications
• Occupational allergens (e.g., cleaning agents, glues, or dyes)

Who Should Consider Patch Testing?

Patch testing is recommended for patients who experience:

• Chronic or recurrent rashes in specific areas (hands, eyelids, neck, face, underarms)
• Skin reactions to jewelry, makeup, or hygiene products
• Eczema that does not improve with conventional treatments
• Suspected allergic responses to job-related materials (hairdressers, healthcare workers, cleaners, etc.)
• New-onset rashes without an identifiable cause

Early identification of allergens can prevent long-term skin damage and reduce treatment dependency.

Patch Testing Process at Yeongjong Central

The procedure is safe, non-invasive, and completed over several days:

1. Day 1: Patch Application

• Small chambers containing standardized allergens are placed on your upper back
• Patches are secured with hypoallergenic tape and must remain dry and undisturbed

2. Day 3: First Reading

• Patches are removed and skin is examined for early reactions such as redness, swelling, or blistering

3. Day 4–5: Final Reading

• A second evaluation is performed to detect delayed responses
• Results are interpreted and explained in detail by your dermatologist

Allergens tested are based on your history, symptoms, and exposure risks. Customized panels may include cosmetic ingredients, workplace substances, or textile chemicals.

Common Allergens Tested

• Nickel sulfate (metal accessories)
• Fragrance mix (perfumes, lotions)
• Parabens, formaldehyde, and preservatives
• Balsam of Peru (flavoring and fragrance agent)
• PPD (hair dye)
• Rubber and adhesive components

We use globally standardized panels, with additional allergen options tailored to Korean and international product use.

Why Choose Yeongjong Central for Patch Testing?

• Dermatologists experienced in diagnosing and managing allergic skin conditions
• Access to Korean, European, and cosmetic-specific allergen panels
• Precise testing in a controlled environment with expert interpretation
• Personalized follow-up care and skincare product recommendations
• Multilingual support for international patients

What to Expect During Your Visit

• Day 1: Consultation and patch application
• Day 3: Patch removal and first results reading
• Day 4–5: Final evaluation of delayed reactions and discussion of findings
• Aftercare: Allergen avoidance plan, updated skincare routine, and treatment adjustments as needed

The entire process requires 2–3 brief clinic visits over 4–5 days.

Book Your Patch Test Today

If you’re dealing with unexplained rashes, product sensitivity, or stubborn eczema, Yeongjong Central Dermatology Clinic offers expert patch testing to uncover the cause and help you achieve lasting skin clarity.

Call now to schedule: 032‑751‑2016