The Role of OTC Decongestants in the Treatment of Rhinosinusitis -
 Professional overview discusses the physiology of nasal congestion and how decongestant medications work. Recommends using decongestants to treat sinus symptoms and reduce antibiotic use. [Requires free registration.]
http://www.medscape.com/viewprogram/2685

Setliff Clinic: Allergies & Sinus Conditions -
 Allergy and sinus specialists located in South Dakota, Iowa and Nebraska.
http://www.setliff.com

SinuCare, Inc. -
 A large amount of information and articles regarding sinusitis and treatment. Features a physician locator, email newsletter, and discussion forums.
http://www.sinucare.com

SinuNEB -
 Information about sinusitis and treating it with this special nebulizer for delivering medication to the sinuses.
http://www.sinuspharmacy.com/

Sinus Center from Allergy Buyers Club -
 Information for sinus, allergy and asthma sufferers.
http://www.allergybuyersclub.com/sinus_center.shtml

Sinus Info Center -
 Offers information on anatomy, causes, symptoms and treatments.
http://www.sinusinfocenter.com

Sinus News -
 Links to news articles on sinus infections, letters from sufferers, and other resources.
http://www.sinusnews.com

Sinusitis - Personal Health Zone -
 Information and resources on symptoms, treatments and organizations regarding sinusitis.
http://www.personalhealthzone.com/sinusitis.html