Rebound congestion is also known as rhinitis medicamentosa, chemical rhinitis, nasal spray addiction.

Your nasal passages can develop a dependence to these medications rather quickly.

That’s why prescribers and product labels say to limit use to three days.

Woman using nasal spray for controlling rhinitis

BURGER / Getty Images

How Decongestants Work

A common belief is that congestion is sparked by mucus blocking your nasal passages.

This is only partially true.

The underlying cause of congestion lies in the blood vessels that line your nose.

Certain conditions can cause these vessels to become swollen or constrict.

However, when the blood vessels constrict, there is more space in the airways and your symptoms subside.

They are available both in oral and nasal spray formulations.

Causes of Rebound Congestion

The reasons whyrebound congestionoccurs are complicated and not well understood.

Thus, a vicious cycle is set up.

Treatment

If you are already addicted to a nasal spray, talk to your healthcare provider.

The first week is usually the most difficult and you may experience severe congestion andheadacheswhich then begin to subside.

2006;16(3):148-55.

Varghese M, Glaum MC, Lockey RF.Drug-induced rhinitis.

Am J Respir Crit Care Med.

2010;182(1):19-24. doi:10.1164/rccm.200911-1701OC

Rhinitis Medicamentosa.

http://emedicine.medscape.com/article/995056-overview#a5.

Updated November 17, 2015.