Using a decongestant nasal spray too often or for too long can make a blocked nose worse rather than better.
What is it?
Decongestant nasal sprays shrink the swollen lining inside the nose and give quick relief from a blocked nose. Examples include oxymetazoline, xylometazoline, and phenylephrine. They should be used for about three days, and no longer than five days in a row. Using them for longer can make the congestion worse. Always follow the instructions on the product label, or your doctor's advice.
When these sprays are used frequently or for a prolonged period, the nasal lining can become dependent on the spray to stay open. As each dose wears off, the lining swells more than before, and the nose feels more blocked. This condition is called rhinitis medicamentosa, or rebound nasal congestion.
Steroid nasal sprays are different. When used correctly, they do not cause this rebound effect and are safe for long-term use.
Common symptoms
- A blocked nose that keeps returning soon after each use of the spray.
- Needing to use the spray more and more often to get relief.
- Congestion on both sides of the nose.
- A dry or irritated feeling inside the nose.
Why does it happen?
Decongestant sprays work by tightening the blood vessels in the nasal lining. With repeated use, the lining stops responding normally. When the spray wears off, the blood vessels open wider than before and the lining swells, which brings the blockage back. Over time, the original reason for using the spray may have settled, but the spray itself is now causing the congestion.
How is it diagnosed?
The diagnosis is usually clear from your history and an examination of the nose. The key questions are how often you use a decongestant spray, and for how long.
Sometimes a nasal endoscopy is needed. This is a quick look inside the nose with a thin scope. It checks for other causes of a blocked nose, such as a deviated septum or enlarged turbinates, nasal polyps, or sinus disease.
Treatment
The main treatment is to stop the decongestant spray. If stopping all at once is hard, you can cut down slowly instead. Once you stop, the lining of the nose usually recovers. Some improvement often starts within days, but full recovery can take longer, especially if you used the spray for a long time.
Saline rinses help keep the nose comfortable while you stop. Your doctor may also suggest a steroid nasal spray. This brings the swelling down and makes stopping easier.
It is common for congestion to feel worse for a few days after stopping before it starts to improve. Knowing this in advance makes it easier to persist.
Another problem may be adding to the blockage, such as allergy, a deviated septum, or enlarged turbinates. Treating that problem matters too, so you do not need the spray again.
Prevention
- Use a decongestant spray for about three days, and no longer than five days in a row.
- Do not use them as a regular or daily treatment for a blocked nose.
- If your nose keeps blocking up, get the cause checked instead of relying on the spray.
When should you see a specialist?
It may help to see a specialist if:
- your nose is still blocked after you stop the spray;
- you have found it hard to stop;
- another cause of a blocked nose may need checking.