Cold is a common clinical disease, frequently-occurring, the course of disease is generally 3 to 7 days, can occur all year round. However, some people have a cold after repeated use of drugs for a long time, which is related to random use of drugs regardless of stage and type. First, the early stage; The general onset of the disease is 1 to 2 days, and most of the allergic symptoms in this period are of different degrees, such as sneezing, nasal congestion, nasal flow...
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