A sinus infection, also known as sinusitis or rhinosinusitis, occurs when your nasal cavities become swollen and inflamed ... can help with nasal congestion symptoms without the risk of rebound ...
Swollen adenoid glands can lead to nasal congestion, particularly in children. If the tissue dividing the two nostrils (nasal septum) is crooked (deviated septum), this can also result in a ...