Upper respiratory tract infection natural history, complications, and prognosis

Overview
Upper respiratory infections, commonly referred to the acronym URI or URTI, is the illness caused by an acute infection which involves the upper respiratory tract: nose, sinuses, pharynx or larynx. In the United States, this represents approximately one billion acute upper respiratory illnesses annually.

What to expect (Outlook/Prognosis)?
Upper respiratory tract infection usually gets better in few days and normally have a good prognosis

Possible complications

 * Abscess
 * Bone infection (osteomyelitis)
 * Meningitis
 * Skin infection around the eye (orbital cellulitis)   * Bronchitis
 * Ear infection
 * Pneumonia
 * Sinusitis