The symptoms of allergic rhinitis are often similar to those of early colds, and some patients with allergic rhinitis go to the hospital only after they have been treated as if they had a cold and are not well. In general, the following points can be used to distinguish between cold and allergic rhinitis: Firstly, cold is usually accompanied by systemic symptoms, such as weakness, fever, weakness and general aches and pains, while allergic rhinitis is simply a nasal problem with no systemic symptoms. Secondly, allergic rhinitis usually lasts for several months, while colds usually heal themselves in 1-2 weeks. Thirdly, most of the allergic rhinitis has very obvious seasonality, especially in spring and autumn, while cold can occur all year round. Fourth, through blood tests, most allergic rhinitis show eosinophils and increased IgE values in the blood analysis, while other values are generally normal. In contrast, colds generally have elevated lymphocyte values. Fifth, allergic rhinitis has a high chance of positive allergens and a low chance of colds.