Of the many causes of sinus infections are fungus, bacteria, viral,alergic agents with fungus the most common. Blockage of mucus in sinus cavities due to a primary fungus infection can give rise to secondary bacterial or viral infections.Thus the importance of keeping all nasal passages open.
In the following article a new cause of sinus problems is described involving reduced nasal immunity. This sounds perhaps closer to what is hapening in the case of Herceptin & some other cancer treatments causing sinus infections .
http://www.hopkinsmedicine.org/Press.../09_15_06.html
September 15, 2006
BACTERIA GET OFF EASY IN SINUS INFECTIONS
- Weakened immune system in chronic sinusitis reveals new treatment targets.
I would like to recall one way found (by trial & error) to stop chronic sinus infections using annual Kenalog injections as described in this web site not related to cancer:
http://personal.ecu.edu/wuenschk/mynose.htm
I personally used the same treatment for chronic sinus problems (not related to cancer treatment) with success.