Simple Tips Offering Best Sinus Allergy Relief
Sinus infection triggers nasal blockage, headaches and facial pressure. Sinus symptoms don’t necessarily mean a sinus infection. If the problem persists for over three weeks, then you are experiencing a sinus infection. What is Sinusitis? Sinus is a small cavity in the skull filled with air. They make mucus that keeps the nasal passage moist and free from allergens.
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