Our expert says:
One needs to determine whether you actually have a postnasal drip related to a sinus problem or not. If you have allergic rhinitis (hayfever) with sneezing, postnasal drip and a blocked nose, this should settle on a topical nasal steroid spray and an antihistamine. Allergex alone might not be sufficient. There are newer anti-histamines with less side effects that might work better for you. Your doctor will be able to prescribe these.
If you do not suffer from allergic rhinitis, one needs to determine whether you have underlying chronic sinusitis. Usually you will suffer from associated nasal symptoms such as poor smell or a blocked nose. This might require further investigation by an ENT (endoscopy and possible imaging studies)
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