Why Does Sinus Problem Erupts In Morning? Pseudephedrine Alleviates Pressure?
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Now coming to your query. The reason why the sinus problem usually erupts in the morning is because in a sinus condition are usually related to positional changes. There is excess mucus building up in all through the night due to the position we sleep in and also, as we are not able to help in expelling the same as we are asleep. This causes a clogging/blockage in the passageways, which we wake up to, and experience symptoms almost immediately. As we continue to promote clearing of these passages through the day, it improves. But, the symptoms are maximum in the mornings.
Pseudoephedrine is a nasal decongestant, and so it helps in clearing the nasal and sinus congestion, which has formed overnight. This is how it alleviates the pressure.
I hope I have succeeded in explaining this in the best possible way. Please feel free to write back to me if there is anything unclear or if you have anymore clarifications, I would be more than happy to help you.
Best wishes