Many skin diseases are related to contact with allergens, but in most cases, patients have not detected allergens when treating allergic symptoms, so there is no way to fundamentally solve the problem. If you don't know the allergen, you can't prevent it, and you may be allergic in the future, so you must test the allergen. How does the baby detect allergens?

1, prick test, which is an intradermal test method and the operation method is very simple. Disinfect the skin with iodine first, then drop a drop of prick test solution, and pierce the skin with a prick needle through the test solution. Because this test method is very safe, with little damage to the skin, and the patient has no pain, the sensitivity and accuracy of the test are very high, so this prick test is almost always used in clinical intradermal tests.

2. Patch test method. This detection method is to stick the suspected allergenic substance on the patient's skin and detect the reaction of the patient's T lymphocytes. This detection method is rarely used now.

3. In addition to the above two methods, you can also use blood test to detect allergens. When the baby is checking allergens, there are also some places to pay attention to. Do not take antihistamines for three days before the examination. If the baby's condition is serious, it is not suitable for immediate examination. You should wait until the allergic symptoms are relieved and the condition is under control.