intranasal challenge test

Allergic rhinitis, also known as allergic rhinitis, has clinical features of increased nasal mucosal responsiveness, but increased nasal mucosal reactivity is not necessarily allergic rhinitis, only based on a comprehensive analysis of medical history and various examination results. Can get a correct diagnosis. The intranasal challenge test is a sensitive and specific method. Basic Information Specialist classification: otolaryngology examination classification: biochemical examination Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: The patient has no allergic reaction to the allergen. Positive: If the patient is allergic to the allergen, a typical allergic rhinitis condition can be induced after 3 minutes of placement, and a highly sensitive person can induce an asthma attack. Tips: The diet should be regular and reasonable, that is, high-protein, high-vitamin foods. Normal value The patient has no allergic reaction to the allergen. Clinical significance Abnormal results: If the patient is allergic to the allergen, a typical allergic rhinitis symptom can be induced after 3 minutes of placement, and a highly sensitive person can induce an asthma attack. People who need to be examined: patients with allergic rhinitis. Precautions Pre-examination contraindications: Antihistamines and adrenocortical hormones should be discontinued 48 to 72 hours before the test. If the patient is accompanied by severe asthma, the above examination should not be performed. Requirements for inspection: The test can only test one type of allergen at a time, so it is only used when the skin test is negative, but it is suspected to be allergic to an allergen, or in some special cases, it must be applied for further verification of the skin test. Also, like the skin test, a control should be set before the intranasal challenge to rule out false positives. Inspection process In this method, an allergen solution (1:1000) was dropped onto a circular filter paper having a diameter of 0.5 cm and about 200 μl, and then placed on the surface of the inferior turbinate mucosa. Not suitable for the crowd Inappropriate crowd: None. Adverse reactions and risks No related complications or hazards.

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