30-45 minutes (initial application), 15-30 minutes (follow-up visits)
None
Low
Anytime, as needed for diagnosing skin allergies.
Typically one session with follow-up visits
Patch testing is a diagnostic method used to identify specific allergens that cause contact dermatitis. Small amounts of potential allergens are applied to the skin using patches, which are then monitored over a series of follow-up visits to detect allergic reactions.
Allergen Patches
Avoid applying lotions or creams to the back for a few days before the test. Inform the physician about any medications or skin conditions.
During the initial visit, allergen patches are applied to the back. These patches remain in place for 48 hours. Follow-up visits are scheduled to check for reactions.
Keep the patches dry and avoid strenuous activities that may cause sweating. Follow specific aftercare instructions provided by the physician.
Is patch testing safe?
Yes, it is safe and non-invasive.
How long does it take to see results?
Results are typically observed within 48-96 hours after patch application.
Does the testing hurt?
There may be slight discomfort or itching at the test sites, but it is generally well-tolerated.
Are there any side effects?
Mild redness or itching at the test sites is common but temporary.
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