Recently, I often encounter such patients in the clinic: I have a cold for a while, sneezing and running nose, taking cold medicine and anti-inflammatory drugs, but this cold just won’t get better, what’s wrong with my nose? At this time, I would ask the patient, “Who diagnosed you with a cold? Are you sure it’s a cold you have?” Here, I would like to talk about the difference between a cold and allergic rhinitis. First, the characteristics of the cold: cold, manifested in the mucous membrane of the nasal cavity, is acute rhinitis. Early cold is mostly nasal itching, burning sensation, irritation, self-conscious nasal dryness, and then began to appear fatigue, headache, chills, loss of appetite and other systemic symptoms, can appear sneezing, clear water-like nasal discharge, and then transformed into mucopurulent, when the systemic symptoms are the most severe. Generally within 1-2 weeks, various symptoms gradually reduce and disappear. The allergic rhinitis features: the occurrence of allergic rhinitis is the result of the interaction between the patient’s genetic polymorphism and the surrounding environmental factors, one without the other. Allergic rhinitis generally has no systemic symptoms, mainly manifested as paroxysmal sneezing, runny nose, nasal itching and nasal congestion, which will also persist as long as the allergen persists. After reading the characteristics of the two lesions described above, you can basically be clear about what causes the nasal symptoms you are experiencing. Still not sure? Don’t worry, let’s summarize: 1, the cold systemic symptoms are heavy, allergic rhinitis nasal symptoms are heavy 2, cold nasal mucus first, then turn into mucopurulent, allergic rhinitis is clear nasal mucus 3, cold application of anti-cold drugs to relieve symptoms, allergic rhinitis application of anti-cold drugs after symptoms do not improve 4, cold general 1-2 weeks nasal symptoms will be relieved, allergic rhinitis if not away from allergies, these nasal symptoms will persist. These nasal symptoms persist. Well, you have become a medical expert, come and make a diagnosis for your friends around you who have nasal symptoms.