Identify What's Triggering
Your Skin Reactions

If your skin frequently becomes itchy, red, dry, or irritated, something you encounter in everyday life may be responsible. Ingredients in skincare products, fragrances, metals, and household products can sometimes trigger contact dermatitis. These reactions may develop even after you’ve used the same products for years, making it difficult to identify the exact cause.

Allergy testing at Bravo Dermatology involves patch testing, a method used to identify substances that may be causing delayed allergic reactions on your skin. Small amounts of common allergens are applied to your back using adhesive patches and left in place for 48 hours. Dr. Bravo then evaluates your skin’s response to help identify potential triggers.

Allergy Testing Helps Identify:

  • Fragrance allergies
  • Nickel and other metal allergies
  • Preservatives in skincare and cosmetic products
  • Allergens in soaps, shampoos, and detergents
  • Rubber and adhesive-related contact allergies
  • Hair dye ingredients, including PPD
  • Allergens in topical medications
  • Certain chemicals found in household cleaning products
  • Occupational allergens encountered at work

How Patch Testing Works

Patch testing identifies delayed allergic reactions triggered by your immune system’s response to substances that touch your skin. Small amounts of potential allergens are placed in separate chambers on adhesive patches applied to your back. If you’re allergic to a substance, immune cells recognize it and trigger localized inflammation, usually within 48 to 96 hours. Dr. Bravo then examines your skin at scheduled intervals to look for signs of contact dermatitis.

Benefits of Patch Testing:

  • Identification of specific allergens triggering skin reactions
  • Better understanding of persistent or recurring rashes
  • Detection of delayed allergic reactions
  • Evaluation of multiple potential allergens during one testing process
  • Noninvasive testing without needles or blood draws
  • Guidance on avoiding problematic ingredients and substances
  • More informed choices about skincare and household products

Your Allergy Testing Session With Dr. Bravo

Dr. Bravo begins by reviewing your symptoms, medical history, and possible exposure to allergens. She then applies adhesive patches containing small amounts of different substances to your back. You’ll wear them for about 48 hours, keeping the area dry and avoiding excessive sweating. At your follow-up visit, the patches are removed, and your skin is examined. A second reading, usually around 96 hours after application, helps Dr. Bravo identify delayed reactions.

FAQs

Patch testing doesn’t involve needles or injections. You may experience mild itching or irritation if your skin reacts to an allergen, but the procedure is generally comfortable.

The initial application usually takes around 30 minutes. You’ll return approximately 48 hours later for patch removal and again for a follow-up reading to check for delayed reactions.

You’ll need to keep your back dry while wearing the patches. Avoid showering, swimming, and activities that cause excessive sweating until they’re removed.

You may need to avoid certain medications or topical treatments that could affect your results. Dr. Bravo will provide specific preparation instructions based on your medical history.

No. Patch testing primarily identifies delayed contact allergies. If you suspect food allergies, you may need evaluation by an allergist.

Dr. Bravo will explain which substances caused reactions and help you identify products or materials to avoid.

Schedule Your Consultation for Allergy
Testing
in Covington, LA

Recurring skin irritation can be frustrating, especially when you don’t know what’s causing it. At Bravo Dermatology, board-certified dermatologist Dr. Monica Bravo uses patch testing to help identify contact allergens and guide practical changes to your daily routine. By understanding your triggers, you can make more informed choices about the products your skin encounters. Schedule your allergy testing consultation in Covington, LA, today.

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Life, With Dr. Bravo

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