Yes: The post nasal drip comes from the sinuses and nasal cavity.. Those secretions can irritate your throat and trigger the gag reflex, thus the nausea and vomiting. Best way to treat this is with a steroid nasal spray, oral antihistamines (Claritin etc) and if with infection (fever),a course of antibiotics. Get well soon.
Answered 10/6/2017
2.9k views
Unusual: This is unusual for sinusitis and I suspect the problem may be from migraine instead since it can be mistaken for sinusitis. It may be difficult to diagnose the presence of sinusitis sometimes, and a CT sinus scan may be required to document it. Have you ruled out pregnancy?
Answered 8/17/2017
2.9k views
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