Expert Patch Testing for Skin Allergies
If you’re experiencing any of the symptoms of a skin allergy, professional allergy testing can provide a precise diagnosis. A skin patch test is performed to see if certain allergens will cause a skin irritation called contact dermatitis. Patch tests can usually detect any delayed allergic reaction to an allergen, this process can take several days to show results.
If you seem to be experiencing an allergic reaction involving the skin, you might be wondering which type of allergy test can best determine the source of your symptoms. The ideal solution is to perform a patch test, where allergen-filled patches are placed on your back. If you live in or near the Atlanta area and need the patch test performed by a professional allergist, the experts at Chacko Allergy, Asthma and Sinus Center are here for you.
What Is a Skin Patch Test?
A skin patch test is when a professional allergist performs a test on you using allergens and skin patches. This test is performed to determine if you are indeed allergic to certain allergens that are placed on your body. Some of the allergies that this test can determine may include the following.
- Latex Allergies
- Medication Allergies
- Fragrance Allergies
- Preservative Allergies
- Metal Allergies
- Resins Allergies
How Is a Skin Patch Test Done?
Your Allergist will apply the allergens and patch to either your back or arm. During the time in which you wear the patch, you need to avoid bathing and activities that can cause heavy sweating.
A patch test does not use needles, instead, allergens are applied to the patches, in which are then placed on your skin for an extended time. During a patch test, you can be exposed to 20-30 different allergens at once, to determine if any of the allergens applied will cause contact dermatitis.
How Long Does a Skin Patch Test Take?
You will need to wear a skin patch for a minimum of 48 hours – 72 hours. This gives time for the patch to work and show the results that your allergy doctor is looking for.
Things to Avoid for 48 Hours
Exposing the skin to external factors can change how it reacts and can lead to inaccurate results. Even minor disturbances during the testing period can alter how the skin reacts. While the patch is in place, avoid the following activities for 48 hours.
- Bathing
- Excessive perspiration
What Is the Purpose of Patch Tests?
The purpose of patch testing is to evaluate your reaction to metals (jewelry), cosmetics, hair dyes, fragrances, skin creams, some medications, latex, and several other substances. Your Atlanta allergy team will apply up to 20 or 30 substances onto your skin, some of which may cause contact dermatitis, i.e., skin irritation.
In some cases, we will ask you to bring in your own substances that you have regular exposure to, which we will prepare for testing prior to your first appointment.
*** If severe irritation or inflammation occurs, contact us immediately! ***
What Safety Tips Should I Follow for Allergy Patch Testing?
Allergy skin tests are equally safe for both adults and children. However, we strongly recommend informing us of any medications that you or your child may be taking prior to scheduling the skin test, as some medications may interfere with the results. Temporarily stopping certain medications is a necessary part of providing accurate diagnostic information. Allergists can discuss when and for how long you need to stop antihistamines and other medications to ensure you receive effective allergy care services based on precise results.
What to Expect After Skin Patch Allergy Testing
Patches are usually removed after 48 hours for the first reading, with a second reading being taken 72 to 96 hours later (as delayed reactions can appear after removal). Your allergist will document the appearance and intensity of any response to help interpret the results. Mild redness or itching often indicates irritation, while small raised bumps (papules) or fluid-filled blisters (vesicles) are more suggestive of an allergic response. When necessary, your allergist will prescribe topical solutions and develop a long-term allergy treatment plan for your skin.
Common Questions About Skin Patch Testing
Are there any risks with skin patch testing?
The risks of skin patch testing are minimal, with the most likely concern being minor skin irritation or itching at the test site. In rare cases, a person may experience a more significant allergic reaction, but your allergy doctor will monitor and manage these responses.
How accurate is skin patch testing?
Skin patch testing is highly accurate in diagnosing contact dermatitis. As with all allergy tests, there is a possibility of false-positive or false-negative results. For this reason, allergists evaluate test results with medical history and symptom analysis to make an assessment.
What are the benefits of skin patch testing?
The main benefit of skin patch testing is the ability to precisely identify the allergen triggering an allergic reaction. This procedure is safe and straightforward, and plays a vital role in the allergy treatment process.
Schedule Professional Allergy Testing Today
For more information on patch testing and/or a detailed consultation with an allergist local to Atlanta or surrounding areas, please call (678) 668-4688 or request an appointment online today. At Chacko Allergy, Asthma and Sinus Center, it is our job to discover and treat your allergies at the source.
