What Causes Sinusitis and How It’s Diagnosed

Sinus pressure, nasal congestion, facial pain—these symptoms are more than just a nuisance. For many people, they’re signs of sinusitis, a condition that can affect breathing, sleep, and overall comfort. At Desert Ear, Nose & Throat Medical Group, Inc. in Rancho Mirage, CA, providers specialize in identifying and treating sinusitis to help patients breathe easier and feel better.

Understanding Sinusitis

Sinusitis is the inflammation or swelling of the tissue lining the sinuses. Normally, these air-filled spaces help filter and humidify the air we breathe. But when the sinuses become blocked due to infection, allergies, or structural issues, mucus builds up and creates pressure or pain—leading to sinusitis.

Sinusitis can be acute (lasting a few days to weeks) or chronic (lasting 12 weeks or longer). In either case, early evaluation and proper diagnosis are key to effective relief.

What Causes Sinusitis?

Several factors can lead to sinus inflammation:

• Viral infections – Often following a cold or upper respiratory illness
• Bacterial infections – Especially if symptoms persist or worsen after a week
• Allergies – Triggering swelling and blockage in the sinus passages
• Nasal polyps – Small growths that can obstruct airflow
• Deviated septum – A structural issue that limits proper sinus drainage
• Environmental irritants – Like smoke, dust, or pollution

Identifying the cause helps guide treatment, whether that means addressing allergies or treating an infection.

How Sinusitis Is Diagnosed

At Desert Ear, Nose & Throat Medical Group, diagnosis begins with a thorough medical history and symptom review. Providers may use a physical exam to check for tenderness, swelling, or signs of infection. In some cases, nasal endoscopy—a small camera used to view inside the nasal passages—may be recommended for a closer look.

Imaging tests such as a CT scan can also help confirm a diagnosis, especially in cases of chronic or recurrent sinusitis where anatomical issues may be involved.

Specialized Sinus Care in Rancho Mirage

The team at Desert Ear, Nose & Throat Medical Group, Inc. is committed to helping patients find long-term relief from sinus symptoms. Whether it’s a short-term infection or an ongoing condition, personalized care plans are designed to address both the cause and the discomfort.

To schedule a consultation, call (760) 340-4566.