HOW SMART PEOPLE SEARCH The best writings on todays topics   Navagation: Health Directory > Acute Sinusitis Acute Sinusitis Acute Sinusitis: Acute sinusitis is when sinuses become inflammed and/or infected. Acute Sinusitis is usually caused by a viral infection or an allergin.  Related Topics Featured Accounting Listings Feature Your Site Here!   HOME • About • Disclaimer • Contact • FAQ