With acute sinusitis, the cavities around your nasal passages (sinuses) become inflamed and swollen.This interferes with drainage and causes mucus to build up.

• 患急性鼻窦炎时，鼻通道周围的腔道（鼻窦）发生炎症和肿胀，干扰了黏液排出，导致黏液积聚。