Nasal infections, often referred to as sinus infections or sinusitis, occur when the tissues lining the nasal passages become inflamed. This inflammation can be caused by viruses, bacteria, or allergens, leading to symptoms such as nasal congestion, facial pain, and a runny nose. These infections can be acute, lasting for a short period, or chronic, persisting for several weeks or longer. Treatment typically includes rest, hydration, and over-the-counter medications to relieve symptoms. In some cases, a healthcare provider may prescribe antibiotics if a bacterial infection is suspected.