Patch Testing
Patch testing is an in-office diagnostic procedure used to identify substances that may be causing allergic contact dermatitis, a common cause of persistent rashes and eczema. It can detect allergies to ingredients commonly found in skin-care products, cosmetics, medications, jewelry, clothing, adhesives and household products. Patch testing does not test for food allergies or seasonal allergies.
Who should consider patch testing?
Patch testing may be appropriate for patients experiencing:
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Chronic or recurrent rashes
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Hand eczema
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Eyelid or facial dermatitis
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Eczema that is not improving with treatment
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A suspected reaction to a skin-care, hair-care or cosmetic product
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A rash related to workplace or occupational exposures
Comprehensive 80-allergen testing
Lincoln Road Dermatology uses an expanded North American 80-allergen series to evaluate many of the most common and clinically relevant causes of allergic contact dermatitis.
The panel includes allergens found in:
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Fragrances and botanical ingredients
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Preservatives and antimicrobials
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Metals such as nickel, cobalt and chromium
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Topical medications and corticosteroids
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Hair dyes, cosmetics and skin-care products
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Rubber, adhesives, acrylates and resins
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Textile dyes and sunscreen ingredients
Additional allergens may be considered based on your rash, occupation and product exposures.
What to expect
Patch testing usually requires three office visits over approximately one week:
Visit 1: The patches are applied to your back.
Visit 2: The patches are removed and the skin is examined.
Visit 3: A final reading is performed, and your results are reviewed.
The patches must remain dry and securely in place during the testing period. Patch testing is not painful, although a positive reaction may temporarily cause itching or irritation.
After testing, you will receive personalized guidance about which ingredients to avoid and which products may be safer for your skin.
Insurance and cost
Patch testing is considered a medical procedure, but insurance coverage varies by plan. Our team can review your benefits before scheduling. Self-pay options are also available.
Could an ingredient be contributing to your rash?
Schedule a consultation to determine whether patch testing is appropriate for you.

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