patchtestejä

Patch testing, known in Finnish as lapputestaus or allergiatestaus, is a diagnostic method used to identify substances that cause allergic contact dermatitis. This condition occurs when the skin reacts to a specific allergen, leading to inflammation and discomfort. Patch tests help pinpoint the exact culprit responsible for the allergic reaction.

The procedure involves applying small amounts of common allergens to the skin, typically on the back, using special patches. These patches are left in place for approximately 48 hours. During this time, the patient should avoid showering and excessive sweating to ensure the patches remain adhered and the test results are accurate.

After the initial 48-hour period, the patches are removed, and a preliminary reading of the skin reaction is performed. A second reading is usually conducted 24 to 72 hours after the patches are removed to assess delayed reactions. Any redness, swelling, itching, or blistering at the site of application indicates a positive reaction to that specific allergen.

Based on the results, a dermatologist or allergist can formulate a personalized treatment plan, which often involves avoiding the identified allergen. This can significantly improve the quality of life for individuals suffering from allergic contact dermatitis by preventing future flare-ups. Patch testing is a safe and effective way to diagnose this common skin condition.