How should allergic rhinitis be diagnosed? Clinical diagnosis of allergic rhinitis is mostly dependent on symptomatic manifestations: more than 3 to 5 consecutive sneezes, profuse dilute watery nasal discharge, nasal congestion and nasal-eye itching. As well as the response to treatment with antihistamines and nasal glucocorticoids. The diagnosis is usually based on the finding of clear evidence of sensitization and the presence of corresponding symptoms of exposure to the allergen. Evidence of sensitization is defined as the detection of allergen-specific IgE antibodies in the serum or a positive skin test. Also known as allergen testing, the diagnostic efficacy of these 2 methods is similar because allergen preparations are limited in variety but do not encompass all allergens and cases. The advantages of the serum test for allergen-specific IgE antibodies are that the patient does not have to stop taking antihistamines several days in advance and the operation does not require complex techniques. The advantage of the skin test is that the results are available immediately.