In clinical practice, patients often say that they often catch a cold. Sometimes they catch a cold several times a day. They often take some cold medicine, sometimes it is easy to use, sometimes it is useless, and they are very distressed. I learned through careful inquiry that in fact, he had allergic rhinitis, not a cold. Now, let's introduce the difference between cold and rhinitis, so that patients can have a clear understanding of it, and don't miss the treatment.
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