The sinus is a cavity around the nasal passages that conditions air before it reaches the lungs. Sinus infections, known as sinusitis, are common and caused by infections or swelling in the sinus cavities, resulting in symptoms like headaches and difficulty breathing. Chronic sinus infections require prolonged treatment with antibiotics, nasal rinses, decongestants, or other therapies. Home remedies for sinus pressure relief include inhaling steam, consuming garlic or apple cider vinegar, avoiding food allergens, drinking herbal teas, or inhaling essential oils.