there are two types of sinusitis : acute (sudden onset) and chronic (long-term). sinusitis often develops after a cold or viral infection. most sinus infections improve on their own but sometimes they develop into a bacterial infection -swelling inflammation and mucus production caused by the cold can lead to blockage in the nasal passages which may encourage the growth of bacteria. acute sinusitis whether viral or bacterial may develop into chronic inflammation or infections that may last 8 weeks or longer. chronic sinusitis can lead to permanent changes in the mucous membranes that line the sinuses. as a result of these changes you may become prone to having more sinus infections that may become more difficult to treat. complications of sinusitis (such as an infection of the facial bones called osteomyelitis ) are relatively rare. but when complications occur they may be life-threatening and often require extensive medical or surgical treatment. webmd medical reference from healthwise this information is not intended to replace the advice of a doctor. healthwise disclaims any liability for the decisions you make based on this information. © 1995-2011 healthwise incorporated. healthwise healthwise for every health decision and the healthwise logo are trademarks of healthwise incorporated.
what happens to someone when they get sinusitis?