Intradermal tests are a type of allergy test used to identify specific allergens that may cause reactions in individuals. During this test, a small amount of allergen is injected just beneath the skin's surface, usually on the forearm. The area is then monitored for any signs of an allergic reaction, such as redness or swelling. These tests are often used when skin prick tests are inconclusive or when testing for certain allergies, like venom from insect stings or medications. Intradermal tests are generally safe but should be performed by trained healthcare professionals to manage any potential reactions.