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The most common cause of vomiting, sore throat, and a stuffy nose for less a week is a viral infection. There actually are many viruses that can do this and they all act similarly, so we typically group them together and use generic terms in the diagnosis. Since the Med Express did not prescribe any antibiotics, there also apparently was not any evidence of a bacterial infection on examination. Steroids are sometimes used to help ease inflammation in someone with a viral infection, although it can also exacerbate the nausea and vomiting.
Since antibiotics are not helpful in eradicating these generic viral infections, the other usual approach is to use medicines to help ease symptoms. Over the counter medicines for motion sickness, such as meclizine or dimenhydrinate, can help ease nausea and vomiting from a viral infection. Throat lozenges can be used to help with the sore throat. Acetaminophen can also be used. Antihistamine/decongestants can be used for the stuffy nose.
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