Subacute sinusitis is inflammation of the sinuses that lasts four to twelve weeks. It differs from other types of sinusitis based on how long a person feels ill.
The sinuses are air-filled openings in the bones of the face. Along with the nose, the sinuses help filter particles such as dirt or pollutants from the air while breathing. If the sinuses become infected, they make a lot of mucus. Mucus is a jelly-like substance that normally helps catch dirt. When too much is in the sinuses, they feel stuffy or blocked.
The symptoms of subacute sinusitis are similar to those of acute sinusitis. However, in subacute sinusitis, the symptoms can be more severe. They include:
Like other types of sinusitis, allergens, viruses, bacteria, or fungi can cause subacute sinusitis. Sometimes, more than one is present.
The risk factors for subacute sinusitis include:
A healthcare professional can diagnose subacute sinusitis. Usually only a history and physical examination is required, though imaging of the head, such as an x-ray or CT scan may be requested. If the symptoms continue despite treatment, a person may be referred to an ENT consultant (ear, nose, and throat specialist).
There usually are not complications to subacute sinusitis other than feeling unwell for a long time. In rare cases, the infection can spread around the eyes, the teeth, or into the brain.
Treatment for subacute sinusitis can include one or more of the following:
The best way to prevent subacute sinusitis is by preventing illness in general. Washing hands thoroughly can help. Eating a wide variety of fruit and vegetables helps the body stay healthy, as does getting plenty of sleep at night. For people who work in areas with environmental allergies, wearing a mask over the nose and mouth can prevent those entering the nasal passages. For people with HIV or AIDS, taking their medication exactly as prescribed can help their body fight off infection more efficiently.