What Causes a Sinus Infection?

Sinuses are the air-filled, bony cavities inside the skull and the face. Sinus infection is also referred to as rhinosinusitis and is characterized by the inflammation of soft tissues which form the lining of the sinus cavity.

Many of you may have encountered a sinus isssue or sinus infection. But what causes sinus infection?  Although everyone's condition is different, there are some common causes listed in the following contents can help you figure out what causes your discomfort, then take some effective actions to deal with it.

What Are the Types of Sinus Infections?

Sinusitis can be classified into 2 varieties: an acute or short term sinusitis that often occurs after catching a cold or experiencing allergic reaction due to environmental pollutants, whereas the second type is chronic or long term sinusitis which stays for more than 3 months.

Acute Sinus Infection

Acute sinus infection or acute sinusitis is a response to acute bacterial rhinosinusitis or infection. The duration of infection is usually less than a month. Sub-acute sinus infection may last up to 1 to 3 months.

Chronic Sinus Infection

This type of infection may last up to 3 months. It can be further categorized into various sub-types, such as allergic fungal sinusitis and chronic sinusitis with or without nasal polyps.

Infected Sinusitis

This variety is usually caused by uncomplicated viral infections. But other pathophysiological events that may contribute to infected sinusitis arebacterial growth and fungal infection. Chronic and sub-acute types of sinusitis occur mostly due to incomplete medical treatment of acute sinus infections.

Noninfectious Sinusitis

Non-infectious variety is the result of exposure to allergens and irritants. The infection may last up to weeks or months leading to subacute, acute and chronic sinusitis.

What Causes Sinus Infections?

Causes of Acute Sinus Infection

Common causes of acute sinus infection are listed below:

Some health conditions that may increase the risk of developing acute sinusitis include:

Allergies like hay fever, nasal polyps and tumors, abnormalities in nasal passageways, deviated nasal septum, tooth infection, frequent exposure to pollutants like cigarette smoke, complicated cystic fibrosis, immune system disorders and GERD.

Causes of Chronic Sinus Infection

Common causes of chronic sinus infection are listed below:

What Are the Symptoms of Sinus Infection?

Symptoms of Acute Sinusitis

Primary symptoms include:

Other symptoms include:

Symptoms of Chronic Sinusitis

Primary symptoms include:

Other symptoms include:

How to Treat Sinus Infection

With knowing what causes sinus infection, we can know the proper treatment based on the causes. 

Treatment of Acute Sinusitis

Treatment of Chronic Sinusitis

Home Remedies

Watch the video below for some extra home remedies to treat chronic sinusitis:

No matter what the sinusitis type is, treatment will certainly help. It is crucial to pinpoint the underlying cause for making the treatment successful. If the sinusitis has resulted from allergies, then decongestants can’t treat it entirely on their own.

If the sinusitis symptom persists for longer than a few days, then consult your doctor right away. Diagnostic tests like MRI, CT scan, X-ray and imaging tests will assist in determining the exact cause. Usually sinusitis is treated effectively when a number of approaches are used in a combination especially the combination of self-care and medications.

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