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Health condition · Clinically reviewed

The common cold, what actually helps, and when to worry.

A mild, self-limiting viral illness. Most colds settle in a week or two with rest, fluids and simple relief. Antibiotics do not help.

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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against NICE, UKHSA and peer-reviewed sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK guidance on self-care, antimicrobial stewardship and antivirals for high-risk groups.

Key facts

The common cold at a glance.

The essentials, in plain English. What causes it, how long it lasts and why antibiotics are not the answer.

  • What it is

    A mild, self-limiting viral upper respiratory tract infection caused by more than 200 different viruses.

  • How common

    Adults get 2 to 4 colds a year; children 6 to 8 or more. It is the single most common reason for time off work and school.

  • Main culprits

    Rhinoviruses cause about half; then coronaviruses (endemic and COVID), influenza A and B, parainfluenza, RSV, hMPV and adenovirus.

  • How it spreads

    Respiratory droplets, contaminated surfaces and hand-to-face contact. Incubation 1 to 3 days; infectious from a day before symptoms until they settle.

  • Duration

    Typical cold lasts 7 to 10 days. A dry post-viral cough can linger for weeks after everything else has cleared.

  • Antibiotics

    Not indicated for a cold. Antibiotics do not shorten viral illness and drive resistance if used unnecessarily.

Why this guide matters

Simple relief, sensible testing, no unnecessary antibiotics.

A cold is one of the most over-medicated illnesses in modern life. The three points below shape everything else on this page.

  • Most colds need only self-care

    Rest, fluids, paracetamol or ibuprofen, saline and honey do the heavy lifting for the vast majority of adults and children.

  • Test when it changes management

    Flu and COVID tests are worth doing when a positive would unlock an antiviral or protect someone at high risk.

  • Know the red flags

    Breathlessness, chest pain, confusion, prolonged high fever or a child who is drowsy or dehydrated need urgent review, not another cold remedy.

How the diagnosis is made

From first sniffle to a clear plan.

The steps a UK GP will normally follow, in order, so you know what to expect and why. Most colds need no test at all.

  1. 01

    Assessing

    Clinical assessment

    A cold is diagnosed on symptoms alone. Nasal congestion, sore throat, cough and mild fever with a clear timeline are usually enough.

  2. 02

    Assessing

    Rule out red flags

    Screen for sepsis, severe otitis, peritonsillar abscess, meningitis, Kawasaki disease and pneumonia before reassuring.

  3. 03

    Assessing

    Distinguish from lookalikes

    Influenza, COVID-19, allergic rhinitis, streptococcal pharyngitis, pertussis and inhaled foreign body in children all mimic a cold.

  4. 04

    Confirming

    COVID and flu testing

    Consider a lateral flow or PCR during outbreaks, in high-risk patients, or when an antiviral decision depends on it.

  5. 05

    Confirming

    Throat swab if Centor high

    Fever, tonsillar exudate, tender anterior nodes and no cough raise the suspicion of strep and support a rapid test or swab.

  6. 06

    Safety-net

    Selective bloods

    CRP and full blood count are only helpful when bacterial infection is genuinely suspected, not for routine colds.

  7. 07

    Safety-net

    Safeguarding in children

    Very frequent colds warrant a wider look at housing, parental mental health and immune concerns rather than more antibiotics.

Typical timeline: most colds settle within 7 to 10 days.

Symptoms

What a cold actually feels like.

The familiar mix of a blocked nose, sore throat, cough and mild fever, and the features that mean you should stop and think again.

  • Nasal congestion and runny nose

    Clear discharge that becomes thicker and yellow-green over days is normal and does not mean bacterial infection.

  • Sneezing

    Often the earliest symptom, usually settling within the first few days.

  • Sore throat

    Scratchy discomfort worse on swallowing, typically peaking early and easing after two to three days.

  • Cough

    Starts dry, may become productive and can linger as a post-viral cough for weeks after the acute illness.

  • Mild fever and malaise

    Low-grade fever, tiredness and body aches. High or prolonged fever should prompt a rethink.

  • Headache and hoarseness

    Sinus-related pressure headache and a hoarse voice as the larynx becomes involved.

  • Blocked or painful ears

    Eustachian tube congestion is common; persistent severe pain or discharge suggests otitis media.

  • Red flag - breathlessness or confusion

    Shortness of breath, chest pain, drowsiness or confusion move this beyond a cold and need urgent review.

Treatment

How a cold is treated in the UK.

Self-care first, symptom relief where useful and antivirals reserved for confirmed flu or COVID in high-risk patients. No antibiotics.

  • Rest and fluids

    The foundation. Sleep supports immune function and fluids thin secretions and prevent dehydration.

  • Paracetamol or ibuprofen

    For fever, sore throat, headache and body aches. Use standard adult or weight-based paediatric doses.

  • Saline nasal drops or spray

    Safe for infants and adults. Loosens mucus and eases congestion without medication side effects.

  • Honey (over 1 year old)

    A spoonful of honey soothes cough and throat and is supported by NICE for children over one and adults.

  • Steam, humidified air, lozenges

    Symptomatic relief for congestion and throat irritation. No cure, but genuinely comfortable.

  • Decongestants

    Oral pseudoephedrine short-term in adults (avoid in cardiovascular disease and hypertension); topical oxymetazoline for max 5 days to avoid rebound.

  • Antihistamines and combinations

    First-generation antihistamines may dry a runny nose but sedate. Combination cold products offer modest gains with more side effects.

  • Antivirals when indicated

    Oseltamivir for influenza within 48 hours in high-risk groups; Paxlovid or molnupiravir for COVID-19 within 5 days per NICE.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and specialist society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP knows your history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE CKS. Common cold.

  • NICE NG120. Cough (acute): antimicrobial prescribing.

  • NICE NG191. COVID-19 rapid guideline: managing COVID-19.

  • UKHSA. Respiratory virus surveillance and vaccination guidance (Green Book).

Red flags

When a cold needs urgent attention.

Most colds are manageable at home. These are the situations that are not, where the phone or A&E is the right next step.

  • Shortness of breath or chest pain

    Breathlessness at rest, wheeze that does not settle or chest pain suggests pneumonia, PE or cardiac cause. Same-day assessment.

  • Confusion, drowsiness or collapse

    New confusion, difficulty rousing or a collapse in an adult or child is a sepsis or meningitis flag. Call 999 or attend A&E.

  • Fever above 39 C or lasting >5 days

    High or prolonged fever moves this outside a typical cold. Reassess for bacterial infection.

  • Symptoms worsening after day 7 to 10

    A cold that appears to improve then deteriorates is a classic pattern for secondary bacterial sinusitis, otitis media or pneumonia.

  • Severe headache, neck stiffness, rash

    Meningitis red flags. Non-blanching rash needs immediate emergency care.

  • Signs of dehydration in a child

    Reduced wet nappies, dry mouth, sunken eyes or unusually sleepy or floppy child. Seek urgent assessment.

  • Underlying asthma or COPD flaring

    Increased inhaler use, night waking or a drop in peak flow needs the rescue plan and, often, a same-day GP review.

  • Aspirin in children

    Never give aspirin to under-16s during a viral illness. Risk of Reye syndrome, a rare but serious brain and liver condition.

  • Immunocompromised or high-risk

    Chemotherapy, transplant, biologic therapy or advanced age lowers the threshold for testing and antivirals for flu and COVID.

Living with it

An everyday illness, handled well.

Four things that make the biggest difference: simple self-care, staying home when you can, patience with a lingering cough, and prevention that actually works.

A quiet reminder

Prevention beats cure, especially in winter.

Hand hygiene, respiratory etiquette and the seasonal vaccines protect you and everyone around you.

  1. 01 Simple

    Do the boring basics well

    Rest, fluids, paracetamol or ibuprofen, saline and honey do most of the work. Fancy products rarely add much.

  2. 02 Kind

    Stay home when you can

    A day or two at home protects colleagues, classmates and vulnerable relatives. Masks help when you have to go out.

  3. 03 Patient

    Expect a lingering cough

    A post-viral cough can outlast the cold by weeks. It is annoying but usually harmless if the rest of you feels well.

  4. 04 Prevent

    Wash hands and vaccinate

    Hand hygiene, respiratory etiquette and the seasonal flu, COVID and RSV vaccines are the highest-value prevention we have.

Frequently asked

Everything we get asked about the common cold.

Quick answers on causes, self-care, antibiotics, antivirals and when to get help.

  • What causes a common cold?

    A cold is caused by any of more than 200 respiratory viruses. Rhinoviruses account for about half. Endemic and seasonal coronaviruses, COVID-19, influenza A and B, parainfluenza, RSV, human metapneumovirus and adenovirus can all present the same way.

  • How is a cold different from flu or COVID-19?

    Flu tends to hit harder and faster with high fever, muscle aches and profound tiredness. COVID-19 can look like a cold but classically causes loss of smell or taste and is confirmed on a lateral flow or PCR. If you are high risk or unsure, test rather than guess, especially in the first few days when antivirals could help.

  • How long does a cold last?

    Most colds settle in 7 to 10 days. The cough is often the last symptom to go and can persist for two to three weeks as a dry post-viral cough. Symptoms getting worse after day 10, or a second peak of fever, suggest a bacterial complication such as sinusitis or otitis media.

  • Do I need antibiotics for a cold?

    No. Antibiotics do not work on viruses, will not shorten your cold and increase side effects and antimicrobial resistance. They are reserved for confirmed or strongly suspected bacterial complications such as pneumonia, moderate to severe bacterial sinusitis or acute otitis media meeting NICE criteria.

  • What actually helps me feel better?

    Rest, plenty of fluids, paracetamol or ibuprofen for pain and fever, saline nasal drops or spray, honey (over one year old) for cough, and steam or a humidifier for congestion. Zinc lozenges may shorten duration slightly. Decongestants can help short-term but avoid topical decongestants for more than five days to prevent rebound congestion.

  • When should I see a doctor?

    See a GP or seek urgent care if symptoms last more than 10 days, if fever is high or prolonged, if you have shortness of breath, chest pain, confusion, severe headache or a rash that does not fade under pressure, if a child is dehydrated or unusually drowsy, or if you have asthma or COPD that is flaring. High-risk patients should ask about antivirals for flu or COVID-19 early.

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