The sinuses are cavities present in the facial bones.
The sinuses are cavities present in the facial bones. Frontal sinusitis is the swelling or infection of the frontal sinuses. The frontal sinuses are located just behind the eyes. All the sinuses produce mucus that drains into the nasal cavities. If the frontal sinuses are inflamed or infected, they cannot drain mucus efficiently, which causes congestion of the inner lining of the face and nose. Frontal sinusitis can be acute or chronic. In acute sinusitis, the symptoms last less than 12 weeks. In chronic sinusitis, the symptoms last longer than 12 weeks.
What causes frontal sinusitis?
The most common causes of frontal sinusitis are:
- Viral, bacterial, and fungal infections: Upper respiratory tract infection is a common cause of sinus infections.
- Allergies (allergic rhinosinusitis): Exposure to certain allergens, such as dust, pollen, and animal dander, can cause sneezing and itching, inflammation of the mucosal lining of the nose and sinuses, and accumulation of mucus. This can block the sinuses and prevent mucus draining.
- Deviated nasal septum: The nasal septum divides the nasal cavity into two parts. A deviated septum occurs when the nasal septum is displaced to one side making one nasal passage smaller. A deviated nasal septum can block the sinus openings, and the nasal passage becomes a problem when it regularly makes breathing difficult or causes other blockages. This increases the frequency of infections, such as frontal sinusitis.
- Nasal polyps: A poly is a soft, painless growth arising from the inner lining of the nose or sinuses. They may develop due to recurrent infections, allergies, chronic respiratory conditions, such as asthma. Polyps can block the nasal passage and drainage of mucus through the sinuses.