Rebound congestion may occur if nasal preparations are used on a daily basis over a prolonged period of time.

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Rebound congestion, also known as "rhinitis medicamentosa," can occur as a result of overusing nasal decongestants or sprays. This can cause the nasal passages to become inflamed and congested, possibly even worse than before using the medication. It is recommended to use nasal decongestants for no longer than 3-5 days at a time to avoid the risk of rebound congestion.

Rebound Congestion May Occur If Nasal Preparations Are Used on a Daily