https://coastalsinus.com/Coastal Sinus explains sinus infections, chronic sinusitis, nasal polyps, sinus procedures and how shore humidity, mold and salt air affect your sinuses, in plain language with every article linked to the research behind it.en-us https://coastalsinus.com/how-long-sinus-infection-lasts-when-to-worry/https://coastalsinus.com/how-long-sinus-infection-lasts-when-to-worry/Wed, 04 Nov 2026 12:00:00 GMTMost sinus infections clear up on their own in 7 to 10 days. Get the full timeline, warning signs of a bacterial infection, and when to call a doctor.