What is deviated septum?
The nasal septum is the partition of cartilage and bone dividing the two sides of the nose. In many people it is slightly off-centre, but a significant deviation — present from birth or caused by injury — can obstruct airflow, causing a persistently blocked nostril, mouth breathing, snoring, disturbed sleep and recurrent sinus infections. It affects men and women of all ages, and symptoms often worsen gradually or after a knock to the nose.
Diagnosis is clinical and quick: a GP or ENT surgeon looks inside the nose, often with a small endoscope, to see the deviation and rule out other causes of blockage such as polyps or rhinitis. No scan is usually needed unless sinus disease is also suspected.
Common symptoms
- Persistent blockage of one nostril (or both)
- Mouth breathing, especially at night
- Snoring or disturbed sleep
- Recurrent sinus infections
- Nosebleeds from the deviated area
- Facial pressure or headaches
How long will you wait?
Septoplasty sits in the hard-pressed ENT queue — where only around 55% of patients are treated within 18 weeks — and some NHS areas restrict funding to more severe cases, so referral to surgery commonly takes six months to a year.
Privately, you can typically see an ENT consultant within 3–7 days, with septoplasty usually scheduled within 2–4 weeks of deciding to go ahead.
NHS England median referral-to-treatment wait: 12.4 weeks, with 2.5 million people waiting over 18 weeks (May 2026). Individual waits vary by trust and urgency.
Treatment options
- Septoplasty. A 30–60 minute operation through the nostrils to straighten the septum, usually done as a day case under general anaesthetic.
- Septorhinoplasty. Combines septal straightening with reshaping of the external nose when both function and shape are affected.
- Steroid nasal sprays. Reduce lining swelling and can ease milder blockage without surgery, particularly when rhinitis coexists.
- Turbinate reduction. Shrinking the swollen shelves inside the nose, often performed alongside septoplasty to maximise airflow.
What does private treatment cost?
As a guide, private septoplasty typically costs £3,000–£5,500, rising to £6,000–£9,000 or more for septorhinoplasty involving the external nose.
Does health insurance cover deviated septum?
Insurers generally cover septoplasty when there is clear medical need — documented breathing obstruction, sleep disturbance or recurrent sinusitis — and the problem arose after the policy started. Deviations from old injuries or lifelong blockage often fall foul of pre-existing condition rules. Any cosmetic element, such as reshaping the outside of the nose, is excluded, so combined septorhinoplasty usually involves a self-funded portion.
Frequently asked questions
How do I know if my blocked nose is a deviated septum or something else?
A useful clue is whether the blockage is fixed and one-sided: septal deviation typically blocks the same nostril consistently, while allergy or rhinitis tends to switch sides and fluctuate with seasons or triggers. Only an examination can confirm it, and many people have both problems together. An ENT surgeon will usually trial a steroid spray first, since surgery only helps the structural component.
What is recovery from septoplasty like?
Most people go home the same day and need one to two weeks off work. Expect the nose to feel blocked and congested for the first couple of weeks while internal swelling settles — the benefit emerges gradually over four to six weeks. There is usually little external bruising because the operation is done entirely inside the nostrils. Strenuous exercise and nose-blowing are restricted early on.
Will septoplasty stop my snoring?
It can help, but honesty matters here: snoring usually has several causes, and the septum is only one of them. If your snoring is driven mainly by nasal blockage, straightening the septum often reduces it and improves sleep quality. If throat-level factors, weight or sleep apnoea are involved, septoplasty alone may make a modest difference, so a proper assessment — sometimes including a sleep study — is worthwhile first.