Under normal circumstances, although the cold is usually 4-10 days will be good, but a cough lasting more than a month is also not uncommon, .........

Under normal circumstances, although the cold is usually 4-10 days will be good, but a cough lasting more than a month is also not uncommon, which is more volatile trachea after a cold-related. Generally speaking, if the cold longer than expected, it should once again consider whether a different virus infections or secondary bacterial infection. In addition, allergic rhinitis, bronchitis or chronic cough caused by smoking is often mistaken for flu. Therefore, if a very long time to feel cold, it is necessary to find out whether there are other diseases.