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Nose and Sinus Disorders

Nose and sinus disorders afflict millions of people, causing pain, fatigue, headache, breathing difficulties and loss of smell, among other symptoms.

In fact, sinusitis alone affects about 37 million people at least once each year, making it one of the most common illnesses in the United States.

You don't have to live with the discomfort of nose and sinus problems. These conditions are easily treatable. 

Our nose and sinus experts are compassionate, understanding and, most of all, skilled in diagnosing and treating a wide range of disorders affecting the nose and sinuses.

For more information or to make an appointment, call 714-456-7017 or request an appointment online ›

A thorough physical examination is needed to determine the cause of most nose and sinus problems. 

Nasal endoscopy

Your evaluation may include a nasal endoscopy. 

In this procedure, a narrow tube fitted with a tiny camera (called an endoscope) is passed through both nostrils. For comfort, your nostrils will be treated with a topical anesthetic. The endoscope will help identify any swelling or blockage. Tissue samples will be taken of any abnormal growths.

CT scan

A computed tomography (CT) scan of your sinuses also may be recommended, along with a culture of any fluids draining from the nose. Blood tests may be ordered depending on your other medical conditions.

Treatment depends upon your condition, results of diagnostic tests, and your overall medical condition. We pride ourselves upon working with you to develop a treatment plan that meets your needs.


Bacterial sinus infections are typically treated with antibiotics. Pain relievers and decongestants may be recommended for symptoms. In certain chronic (longstanding) cases, steroids either as sprays or tablets (prednisone) may be recommended.

Allergy testing

If allergies are involved, testing to identify the specific agent may be necessary, followed by ongoing medical treatments.

Image guided sinus surgery

If your symptoms are persistent or polyps are present, and medical therapy has failed to result in improvement, image-guided sinus surgery may be recommended.

Functional endoscopic sinus surgery

Many nose and sinuses conditions can be treated with a minimally invasive procedure called functional endoscopic sinus surgery (FESS). The endoscope, equipped with a light source and tiny camera, makes it possible for surgeons to remove growths blocking the sinuses without facial incisions. FESS also is used to enlarge drainage pathways in the sinuses.

Balloon sinusplasty

Balloon sinuplasty is done to dilate the sinuses in preparation for surgery. It is possible to perform some procedures in the physician's office without general anesthesia.

Our UCI Health otolaryngologists are at the forefront of new developments in nose and sinus care.

As a university medical center where numerous clinical trials are ongoing, we provide our patients with access to innovative treatments not available elsewhere. 

View our current clinical trials ›

Our ear, nose and throat physicians—known as otolaryngologists—are among the best in the country at what they do. Several have been recognized by their peers for their extensive expertise, while patients regard them highly for their skill and compassion.

The Nose and Sinus Disorders team is led by Dr. Edward C. Kuan, chief of the Rhinology and Skull Base Surgery division.

Other team members include:

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