How Can You Tell If You Have A Deviated Septum?

If you can breathe better after a shower or after using a nasal spray, but your nose still feels blocked on one side most of the time, you may have a deviated septum. A deviated septum means the thin wall between your nostrils (the nasal septum) is shifted to one side. This shifts the airflow, making one nasal passage smaller than the other. Many people have a slight deviation and never notice. But when the shift is significant, it can cause chronic nasal obstruction, trouble sleeping, frequent nosebleeds, and other uncomfortable symptoms. The only way to know for sure is to have a doctor examine your nose — typically with a thin lighted scope called a nasal endoscope. If you suspect a deviated septum, paying attention to your symptoms and discussing them with a healthcare provider is the most direct path to a diagnosis.

What Is a Deviated Septum and What Causes It?

The nasal septum is made of cartilage and bone. It divides your nose into two nostrils. In a straight septum, air flows evenly on both sides. A deviated septum means this wall is bent or off-center. It can be a zigzag shape or an S-curve. Some people are born with a crooked septum. Others develop it after a facial injury, such as a broken nose from sports, a fall, or a car accident. Even the normal growth process during childhood can cause the septum to shift. Most people have some degree of deviation — it is very common. Only about 20 to 30 percent of people with a deviated septum have symptoms noticeable enough to seek treatment.

How Can You Tell If You Have a Deviated Septum?

You cannot diagnose a deviated septum on your own, but you can look for telltale signs. The most common symptom is a feeling that one side of your nose is always more blocked than the other. This blockage often switches sides when you lie down, because blood flow changes inside your nose. Other clues include frequent nosebleeds, especially from the narrower side. The dry air hitting the deviated side can cause the lining to crack and bleed. You may also have trouble breathing during sleep, loud snoring, or waking up with a dry mouth. Recurrent sinus infections are another possible sign, because the narrow passage prevents mucus from draining properly. If you notice a pattern of one-sided congestion that does not go away with allergy medicine or cold treatment, a deviated septum should be on your radar.

What Symptoms Are Most Common with a Deviated Septum?

• Nasal congestion on one side — often worse at night when you lie on that side.
• Frequent nosebleeds — the dry air hitting the crooked area irritates the blood vessels.
• Noisy breathing or snoring — the narrowed airway creates turbulent airflow.
• Facial pain or pressure — especially on the side of the blockage.
• Recurrent sinus infections — poor drainage allows bacteria to build up.
• Headaches — sometimes from sinus pressure or from poor sleep.
• Sleep apnea — in severe cases, the airway obstruction contributes to pauses in breathing.
• Difficulty breathing during exercise — the narrowed side limits airflow when you need more.

Not everyone with a deviated septum has all of these symptoms. Some people have only mild congestion. Others have significant trouble sleeping and daily discomfort. The severity of symptoms does not always match the degree of deviation. Some small bends cause major blockages, and some large bends cause few symptoms. That is why a doctor’s evaluation is important.

When Should You See a Doctor for a Deviated Septum?

You should see a doctor if your nasal congestion is persistent and interferes with daily life. For example, if you cannot breathe through your nose during exercise, or if you wake up tired every morning because your breathing is noisy. If you have been using over-the-counter decongestant sprays for more than three days, stop using them and see a doctor — these sprays can cause rebound congestion and make the problem worse over time. Also see a doctor if you have frequent sinus infections that require antibiotics, or if nosebleeds happen more than once a week. An ear, nose, and throat specialist (ENT) is the best type of doctor to evaluate a deviated septum. Primary care doctors can also do an initial exam and then refer you if needed.

How Is a Deviated Septum Diagnosed by a Doctor?

Diagnosis starts with a review of your symptoms and a medical history. The doctor will ask about nose injuries, allergies, and how long you have had trouble breathing. Then they will examine your nose using a nasal speculum (a small instrument that widens the nostril) and a light. This allows them to see the septum and check for deviation. Often, they also use a nasal endoscope — a thin, flexible tube with a tiny camera on the end. This gives a much clearer view of the deeper parts of the nose and the back of the septum. In some cases, the doctor may order a CT scan of the sinuses to check for sinusitis, polyps, or other issues that could be causing your symptoms. Imaging is not usually needed just to diagnose a deviated septum, but it helps when surgery is being considered or when other problems are suspected.

What Treatment Options Are Available?

Treatment depends on how much the deviation affects your life. For mild symptoms, doctors often recommend medical management first. This includes saline nasal sprays to keep the nose moist, nasal steroid sprays (like fluticasone) to reduce swelling, and allergy medications if allergies are also present. Decongestants can help short-term but should not be used for more than three consecutive days. If medical treatment does not relieve symptoms, surgery may be an option. The standard surgery is called a septoplasty. During septoplasty, the surgeon straightens the septum by removing or repositioning cartilage and bone. The procedure is done through the nostrils — no external incisions. It is usually an outpatient surgery, meaning you go home the same day. Recovery takes about one to two weeks, with some swelling, bleeding, and congestion during healing. Most people who undergo septoplasty report significant improvement in breathing. However, surgery does not always fix every symptom, and complications such as bleeding, infection, or a hole in the septum are rare but possible. Surgery is typically reserved for people who have tried medical therapy and still have trouble breathing or other complications like chronic sinusitis.

Can a Deviated Septum Be Fixed Without Surgery?

No, the structural bend in the septum cannot be straightened without surgery. However, many people manage their symptoms without surgery. Nasal steroid sprays, saline rinses, and allergy treatment can reduce swelling in the nasal lining, which opens up the airway even if the bone and cartilage are still crooked. For some people, these measures are enough to breathe comfortably. Lifestyle changes like using a humidifier, sleeping with the head elevated, and avoiding nasal irritants such as smoke can also help. But if the deviation is large, the symptoms may persist despite these efforts.​ It is also important to know that over-the-counter decongestant sprays (like oxymetazoline) may offer quick relief, but they cause rebound congestion if used for more than three days, making the problem worse. Long-term use is not recommended.

Can a Deviated Septum Cause Other Health Problems?

Yes, a significant deviation can contribute to other issues. Poor nasal airflow can lead to chronic mouth breathing, which dries out the mouth and throat and may increase the risk of dental cavities, gum disease, and bad breath. Mouth breathing during sleep can also worsen snoring and contribute to obstructive sleep apnea. Recurrent sinus infections are common because the narrowed passageway blocks mucus drainage. Some people develop Eustachian tube dysfunction, leading to ear pressure or infections. In children, a deviated septum can sometimes affect facial growth or cause sleep problems, but it is less common. Treating the septal deviation — either with medication or surgery — often helps alleviate these secondary problems.

What Should You Expect After Septoplasty Surgery?

If you are considering septoplasty, it helps to know what recovery looks like. The surgery itself takes about 60 to 90 minutes under general or local anesthesia. You will likely have nasal packing or splints inside your nose for a few days. These help support the septum and control bleeding. Your surgeon will remove them during a follow-up visit. For the first week, you will have some swelling, mild pain, and nasal drainage. Most people take about one week off work or school. Heavy lifting, bending, and strenuous activity should be avoided for two to three weeks. It is normal to feel some congestion and stuffiness for several weeks as the inside of your nose heals. The full benefit of surgery — clearer breathing — can take a few months to become noticeable. About 85 to 90 percent of people who have septoplasty feel their breathing is significantly better afterwards. Realistic expectations are important: surgery improves airflow but does not change the shape of the outside of your nose. If you also want cosmetic changes, a rhinoplasty (nose job) may be needed separately.

Are There Alternative Treatments Like Breathing Strips or Nasal Dilators?

Breathing strips (the adhesive strips you place on the outside of your nose) and internal nasal dilators can temporarily open the nasal passages. They work by widening the nostrils or pulling the nasal walls apart. These options can help with snoring or exercise breathing, but they do not correct the septum itself. For mild deviations, they may provide enough relief to get through the night or a workout. They are safe to use as needed, but they are not a long-term solution for a significant deviation. If you find you rely on them every night to breathe, that is a sign you may need a doctor’s evaluation.