Deviated Septum Guide: Causes, Symptoms and Treatment Options

The nasal septum is the central wall separating the nose into right and left cavities. Anteriorly it is cartilage (quadrangular cartilage), posteriorly bone (perpendicular plate of the ethmoid + vomer). Ideally the septum is exactly midline; in real life about 85% of adults have some degree of deviation.

Septal deviation has three main causes: 1) Congenital — pressure during passage through the birth canal or genetic predisposition; the septum may be deviated at birth and become more obvious with growth. 2) Trauma — blows to the nose (sports, fights, road accidents); even forgotten minor trauma can leave a permanent deviation. 3) Asymmetric growth — uneven septal growth during adolescence produces C- or S-shaped deviations.

Not every deviation causes clinical problems. For clinical significance: 1) it must reduce airflow appreciably, 2) the anatomical narrowing is often accompanied by mucosal pathology (turbinate hypertrophy, septal spur). Location (anterior vs posterior) and shape (C, S, spur) determine the clinical impact. Related overview: our functional rhinoplasty approach.

Most typical symptom: unilateral nasal obstruction. Patients often say "one nostril is always blocked, the other one breathes well"; or the blocked side changes with sleeping position (the dependent side becomes blocked). Bilateral obstruction is possible but one side usually predominates.

Other important symptoms: nocturnal snoring and mouth breathing, sleep disturbance, morning dry mouth, daytime fatigue. Septal deviation alone is not enough for sleep apnoea but it worsens existing OSA.

Recurrent sinusitis: a deviated septum impairs paranasal sinus drainage; frequent sinus infections (3+ per year) result. Epistaxis: mucosa on the convex side of the septum thins, bleeds easily (Little's area). Postnasal drip, reduced sense of smell and headache (especially with a spur near a frontal contact point) follow.

In children different findings: mouth breathing, night sweats, behavioural issues, dental malocclusion. Should be assessed together with adenoid hypertrophy.

Diagnosis starts with a simple clinical examination. Anterior rhinoscopy (speculum exam of the front nose) reveals anterior septal deviation. But posterior deviations or spurs may be missed this way.

Nasal endoscopy: a thin flexible or rigid endoscope visualises the entire nasal cavity. The septum, turbinates, middle meatus and sinus ostia are clearly assessed. Done in clinic with local anaesthetic spray; painless.

Imaging: CT is not mandatory for routine septoplasty — clinical assessment suffices. In complex cases (concomitant sinusitis, revision, suspected anatomical variant) low-dose paranasal sinus CT is informative. MRI is only needed if tumour is suspected.

Objective tests: rhinomanometry (pressure-flow) and acoustic rhinometry (cross-sectional area) are used in some clinics. Not mandatory; clinical decision remains based on subjective complaint + endoscopy. The NOSE score (Nasal Obstruction Symptom Evaluation) is a patient-reported severity measure.

Asymptomatic septal deviation needs no treatment — observation only. In mild symptoms, medical treatment is tried: intranasal corticosteroid (reduces mucosal swelling), antihistamine (if allergy coexists), saline irrigation (mucus clearance). These do not correct the anatomy but reduce the mucosal component and may relieve symptoms.

Topical decongestants (oxymetazoline) are fine for brief use (3-5 days); long-term use causes rhinitis medicamentosa. External nasal dilators (Breathe Right) support the alar wall and improve airflow; modest comfort gain but anatomy unchanged.

If allergic rhinitis coexists, specific allergy treatment (allergen avoidance, immunotherapy, combination therapy) is essential. Sometimes most of the complaints stem from allergy and deviation plays a secondary role.

Important: if medical treatment fails after 6-12 weeks, the anatomical component is dominant and surgery enters the picture. Treatment resistance clarifies the diagnosis. Step-by-step details: septum deviation page.

Septoplasty involves reorganising the deviated septal cartilage and bone. Performed entirely inside the nose — no external incisions. Mucoperichondrium is elevated, deviation-causing cartilage and bone removed or reshaped, mucosa re-approximated.

Modern technique: minimally invasive or endoscopic septoplasty. Instead of traditional Killian-type resection, a conservative approach preserves the salvageable cartilage; only the main offending segments are corrected. This reduces post-op septal softening.

Duration 60-75 minutes, general anaesthesia preferred, hospital stay usually same-day or 1 night. Small silicone splints stay inside the nose 5-7 days (to prevent adhesions). External appearance never changes.

Insurance: in Türkiye functional septoplasty is covered by SGK. A report stating "chronic nasal obstruction, clinically significant septal deviation" enables reimbursement. Private hospitals may charge a top-up, but the core surgical cost is covered.

First 24-48 hours: breathing is hard due to internal packing; mouth breathing prevails. Airflow improves markedly once the packing is removed. Mild swelling and intranasal crusting last 1-2 weeks.

First week: light activity, home rest. Most patients feel well by day 3-4 and can work from home. Splints come out at 5-7 days.

Second-third week: return to social activity, mild sport. Saline irrigation becomes a daily routine to support mucosal healing.

One to three months: final result emerges. With correct indication, septoplasty success is 85-90% — the great majority are satisfied. In the 10-15% there is insufficient correction or residual symptoms; revision or turbinate surgery is then considered.

Long-term outcome is usually durable. Slight late drift can occur (especially in very young patients with incomplete growth), but rarely a clinical concern.

In patients with septal deviation, inferior turbinate hypertrophy commonly coexists. This is the compensatory component of obstruction — the turbinate on the concave side enlarges relative to the other and narrows the airway.

If only septoplasty is performed, the convex side opens but the hypertrophied turbinate on the concave side still narrows the airway and the patient asks "why am I still blocked?" Hence combined septoplasty + inferior turbinate reduction has become standard.

Turbinate-reduction techniques: submucosal radiofrequency ablation (RFA — minimally invasive, even office-based), submucosal turbinoplasty (microdebrider), partial turbinectomy (classic resection). Total turbinectomy is no longer preferred (atrophic rhinitis risk). RFA is the most conservative, mucosa-sparing method.

Combined septoplasty + turbinate reduction time 75-90 minutes. Recovery same as septoplasty alone. Outcomes are clearly better — 90%+ patient satisfaction. We share patient experiences on our patient testimonials.