what causes sinus problems

Sinus problems can be caused by a variety of factors, including viruses, bacteria, fungi, and allergies. Sinusitis, which is an inflammation of the tissues in the sinuses, can be caused by the common cold, as well as other viruses, bacteria, and allergies. If a runny nose, stuffy nose, and facial pain persist for more than ten days, it may be bacterial sinusitis, which can be treated with antibiotics and decongestants. Chronic sinusitis, which lasts for 12 weeks or longer, can be caused by medical conditions such as cystic fibrosis, as well as problems inside the nose like a deviated nasal septum or nasal polyps. People with weak immune systems are more likely to develop sinus infections from bacteria or mold. Other factors that can cause sinus problems include colds, seasonal allergies, and a deviated septum. Symptoms of sinus problems can include a blocked or stuffy nose, pain and swelling around the eyes, cheeks, nose, or forehead, and tenderness of the face.