Treatment. if you have a simple sinus infection, your doctor may recommend you use a decongestant and saline nasal washes. you shouldn’t use an over-the-counter decongestant for more than 3 days. Chronic sinusitis and acute sinusitis have similar signs and symptoms, wochen sinusitis 3 but acute sinusitis is a temporary infection of the sinuses often associated with a cold. the signs and symptoms of chronic sinusitis last at least 12 weeks, but you may have several episodes of acute sinusitis before developing chronic sinusitis. 19. okt. 2012 eine sinusitis kann in jedem alter vorkommen. typischerweise kann sich der heilungsprozess bei einem sonst gesunden bis zu drei wochen . Acute sinusitis symptoms often include: 1. thick, yellow or greenish discharge from the nose or down the back of the throat (postnasal drainage) dua. nasal blockage or congestion, causing difficulty breathing through your nose 3. pain, tenderness, swelling and pressure around your eyes, cheeks, nose or forehead th...