What it is
Runny nose / rhinorrhoea involves excess nasal secretion from viral infection, allergy, sinusitis, or environmental irritants.
Research-supported
Runny Nose
Excess nasal discharge, commonly from viral infection, allergic rhinitis, or sinusitis; usually self-limiting but occasionally indicating more significant pathology.
CategoryRespiratory
Reviewed by Gyfts Editorial Team · Editorial Health Review
26 March 2026
At a glance
Runny Nose at a glance
Commonly experienced as
- Constant need to blow the nose, dripping from the nostrils, and post-nasal drip producing throat irritation and cough.
Evidence context
Research-supportedSee the evidence snapshotSafety
See staying safeContext
Patterns of Runny Nose
Rhinorrhoea (colloquially, runny nose) describes excess production or drainage of nasal secretions from the nasal mucosa. Secretion characteristics are diagnostically relevant: clear watery discharge suggests viral rhinitis, allergic rhinitis, or vasomotor rhinitis; thick yellow or green discharge suggests bacterial superinfection or sinusitis; blood-stained discharge warrants investigation; and clear unilateral discharge following head trauma may represent cerebrospinal fluid (CSF) leakage — a serious finding. The nasal mucosa is one of the body's primary immunological interfaces, with mucociliary clearance and IgA secretion forming key defence mechanisms. Chronic rhinorrhoea may reflect allergic sensitisation, non-allergic vasomotor rhinitis, nasal polyps, structural abnormalities, or systemic conditions including hypothyroidism.
Could this be you
People commonly experience
Runny Nose shows up differently for everyone. Browse by how it tends to be felt — these are common experiences, not a checklist or a diagnosis.
In the body1 common experience
- Constant need to blow the nose, dripping from the nostrils, and post-nasal drip producing throat irritation and cough.
Common experiences people describe — not a diagnostic checklist.
The Evidence
Evidence context: runny nose
What the research says about causes, care options, and when a runny nose needs professional attention.
Overall pictureHigh evidence base
Well-understood symptom with strong evidence for common causes
Runny nose is one of the most studied respiratory symptoms, with strong evidence guiding care for allergic and viral causes. Most cases are self-limiting, but certain features — particularly unilateral or blood-stained discharge — require prompt professional assessment.
When to seek urgent assessmentSome presentations of runny nose require prompt professional evaluation and should not be self-managed.
Clear unilateral discharge after a head injury may indicate cerebrospinal fluid leakage — seek urgent care. Blood-stained discharge without known trauma, or unilateral symptoms alongside changes in smell, vision, or hearing, warrant professional assessment. Thick discharge with fever and facial pain lasting beyond 10 days may indicate bacterial sinusitis.
What the evidence supportsSeveral approaches for runny nose have strong or good evidence, particularly for allergic and viral causes.
Intranasal corticosteroid sprays are strongly evidenced as first-line care for allergic rhinitis. Second-generation antihistamines such as cetirizine and loratadine have strong evidence for symptom control. Saline nasal irrigation has good evidence for relief in both acute and chronic rhinosinusitis. Vitamin C and zinc have moderate evidence for shortening viral rhinitis duration.
Safety considerationsSome commonly used nasal remedies carry risks if used incorrectly or in certain health contexts.
Topical nasal decongestants such as oxymetazoline should not be used for more than 3 to 5 days — prolonged use can cause rebound congestion known as rhinitis medicamentosa. Herbal preparations with vasoconstrictive properties should be used cautiously by people with high blood pressure. Always check interactions with existing medications or conditions.
Understanding discharge characteristicsThe appearance and location of nasal discharge can provide useful information about likely causes.
Clear watery discharge typically suggests viral, allergic, or vasomotor rhinitis. Thick yellow or green discharge may indicate bacterial involvement or sinusitis. Chronic rhinorrhoea can reflect nasal polyps, structural issues, or systemic conditions including hypothyroidism. Discharge characteristics are one factor a clinician will consider during assessment.
Traditional system perspectivesSeveral traditional systems have long-standing approaches to nasal congestion and rhinorrhoea.
Traditional Chinese Medicine views acute rhinorrhoea as Wind-Cold or Wind-Heat affecting the Lung system, using warming or dispersing herbs accordingly. Ayurveda employs Nasya nasal therapy and spice-based formulas to clear congestion. Naturopathic approaches often emphasise steam inhalation and dietary adjustments. Evidence for these approaches varies; discuss with a qualified practitioner.
Navigating your care optionsMost runny noses resolve without intervention, but persistent or unusual symptoms benefit from professional input.
For common viral or allergic causes, evidence-based self-care and over-the-counter options are often sufficient. Persistent, recurrent, or unusual presentations benefit from assessment by a qualified health professional to identify underlying causes. Complementary approaches may support comfort alongside conventional care, but are not a substitute for professional assessment where red flags are present.
Safety first
Staying safe
General, informational guidance — not diagnostic. A qualified practitioner can advise on your own situation.
- Topical nasal decongestants (oxymetazoline) should not be used for more than 3–5 days — rebound congestion (rhinitis medicamentosa)
- Herbal preparations with strong vasoconstrictive properties should be used cautiously in hypertension
References
Evidence & Research
Educational sources that inform this overview. Inclusion is for context and does not imply endorsement.
- Global strategy for asthma management and prevention
- Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease
- The diagnosis and management of chronic cough
Full citations are maintained by the Gyfts editorial team and reviewed periodically.
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