Comparison Study Between Cefdinir & Amoxicilline/Clavulanate in Acute Sinusitis and Assessment of Quality of Life

Inclusion Criteria: * Male and female outpatient adults greater than 18 years old fulfilling the case definition for acute bacterial sinusitis * Case definition includes clinical signs and symptoms, radiographic findings and collection of purulent material from the sinus Exclusion Criteria: * Symptoms less than 7 days and more than 3 weeks * History of sinus surgery within 3 months * History of frequent sinus infections (more than 2 episodes within the last 6 months) * History of kidney and liver disease * Pregnant and nursing women * Pre-existing disease that could predispose to sinus infections (cystic fibrosis or nasal polyps * Immunosuppressed patients * History of allergy to either drug. Patients with a documented history of allergies to either penicillin or cephalosporins will be excluded.