How long does it take to see the results of a skin test?
The time for observing the results of a skin test is generally between 5-10 minutes, depending on the specific medication being tested. If there is an allergic reaction to the medication, symptoms such as itching, induration, redness, swelling, and skin rash may appear at the test site. In severe cases, symptoms like palpitations, shortness of breath, chest tightness, blood pressure drop, shock, and even respiratory failure may occur. Prompt medical attention is necessary when adverse reactions occur during the skin test.
Skin test is actually a shortened term for anti-allergy testing, which is one of the most commonly used clinical examinations. Typically, antibiotics like penicillin and streptomycin, as well as cell pigment c, are included in the scope of testing. If a patient develops skin rash, inflammation, or angioneurotic edema, it is a typical allergic reaction. Severe allergic reactions can be fatal, thus it is crucial to conduct a skin test before administering these medications.
The purpose of a skin test is to determine if a patient is allergic to a specific medication. Before the test, it is essential to ensure that the medication dosage is administered under the guidance of a nurse and at the appropriate site to minimize the risk of extensive skin allergies due to improper site selection.
Although severe allergic reactions to skin tests are rare, it is still important to be prepared for such situations. Skin tests should generally be performed in hospitals or community clinics with resuscitation facilities. Skin tests are not recommended when there is dermatitis or eczema on the skin.
Before performing a skin test, a detailed assessment of the patient's condition is necessary. For example, patients who have taken immunosuppressants or antihistamines are not suitable for skin tests. Administering a skin test to such patients may lead to coagulation disorders or severe systemic allergic reactions.
