Flu or Cold? When to Treat at Home and When to See a Doctor
Reviewed by Dr. Farhan Rashid Abbasi, Pharmacist, Medicine Online. For general information only; it does not replace advice from your own doctor.
As temperatures drop and smog settles over Pakistani cities, coughs and runny noses start filling homes and clinics. Most are simple colds that clear up on their own. Some are influenza (flu), which hits harder and can be dangerous for children, older adults and people with long-term illnesses. Knowing which one you have helps you treat it sensibly and spot trouble early.
Flu symptoms vs cold symptoms
Both are viral infections of the nose and throat, but they behave differently.
| Feature | Common cold | Flu (influenza) |
|---|---|---|
| How it starts | Gradually, over a day or two | Suddenly, often within hours |
| Fever | Mild or none | Usually high (38°C or more), with chills |
| Body aches | Slight | Strong muscle and joint aches |
| Tiredness | Mild | Severe; may keep you in bed for days |
| Runny or blocked nose, sneezing | Very common | Sometimes |
| Sore throat | Common | Sometimes |
| Headache | Uncommon | Common |
| Usual recovery | About 7 to 10 days | Fever eases in 3 to 5 days; tiredness and cough can last 2 weeks |
A cough can come with either. In smog season, an irritated throat and dry cough may also be caused by polluted air rather than an infection. Our guide to protecting your lungs during smog season covers that side.
Home care that actually helps
There is no cure for a cold or uncomplicated flu. Treatment is about easing symptoms while your body fights the virus.
- Rest. Stay home from work or school while you have a fever, both to recover and to avoid spreading it.
- Fluids. Water, soups, yakhni and warm drinks prevent dehydration, which is easy to miss with fever.
- Fever and pain relief. Paracetamol is the usual first choice for adults and children when used at the dose on the pack for the person's age and weight. Do not combine two products that both contain paracetamol, which many cold and flu sachets do.
- Blocked nose. Saline nose drops or sprays are safe for all ages. Steam inhalation can help adults feel less congested; never leave children alone near hot water.
- Sore throat. Warm salt-water gargles, lozenges for adults and older children, and honey in warm water for anyone over one year old.
- Clean air at home. Avoid smoking indoors and keep windows shut on high-smog days.
Do not give honey to babies under 12 months. Ask a pharmacist before giving any cough or cold medicine to a child under 6, or before using decongestant tablets if you have high blood pressure, heart disease or glaucoma.
Why antibiotics won't help
Colds and flu are caused by viruses, and antibiotics only work against bacteria. Taking them "just in case" does not shorten the illness, can cause side effects such as diarrhoea, and adds to antibiotic resistance, which makes future infections harder to treat. Use antibiotics only when a doctor diagnoses a bacterial infection and prescribes them.
For some people at high risk, a doctor may prescribe an antiviral medicine for flu, which works best when started within about two days of symptoms appearing. This is a prescription decision, so call your doctor early if you are in a high-risk group.
Who should be extra careful
Flu is more likely to cause complications such as pneumonia in:
- Children under 5, especially under 2
- Adults over 65
- Pregnant women
- People with diabetes, asthma, COPD, heart or kidney disease, or a weakened immune system
If you or a family member falls into one of these groups, contact a doctor sooner rather than waiting it out. People with diabetes should check their blood sugar more often while ill, as infections can push it up; see our guide to using a glucometer at home.
See a doctor urgently if you notice:
- Difficulty breathing, fast breathing or chest pain
- Lips or face turning bluish
- Fever above 39°C that does not come down with paracetamol, or any fever in a baby under 3 months
- Confusion, severe drowsiness or a seizure
- Not drinking, or very little urine
- Symptoms that improve and then suddenly get worse, with a fresh fever or worse cough
- A cough lasting more than 3 weeks
Preventing flu this winter
- Get a flu vaccine every year. The flu virus changes, so last year's shot does not protect you this year. Autumn and early winter is the best time. Ask your doctor, especially if you are in a high-risk group.
- Wash hands often with soap for at least 20 seconds, particularly before eating and after coughing or sneezing.
- Cover coughs and sneezes with a tissue or your elbow.
- Keep sick children home until they have been fever-free for 24 hours.
- Eat well and sleep enough. Many Pakistanis are low in vitamin D, which plays a role in immunity; read our vitamin D guide.
Your winter cold and flu kit
Having the basics at home saves a late-night trip to the pharmacy: a reliable digital thermometer, paracetamol suited to each family member, saline nose drops, lozenges and oral rehydration salts. Browse our cough, cold and flu range, or check our home first-aid kit checklist.
Frequently asked questions
How do I know if I have flu or a cold?
Flu usually starts suddenly with high fever, strong body aches and exhaustion. A cold builds up slowly and mostly affects the nose and throat, with little or no fever.
How long is flu contagious?
Adults can spread flu from about a day before symptoms start until around 5 to 7 days after. Children can be contagious for longer.
Should I take antibiotics for flu?
No. Flu is a virus and antibiotics do not treat it. A doctor may prescribe antibiotics only if a bacterial complication such as bacterial pneumonia develops.
Is it safe to take paracetamol and a cold sachet together?
Often not, because many cold and flu sachets already contain paracetamol. Check the ingredients, and ask a pharmacist if you are unsure.
When should a child with fever see a doctor?
Any baby under 3 months with fever, or any child with fast breathing, unusual drowsiness, refusal to drink, a rash that does not fade when pressed, or fever lasting more than 3 days, should be seen by a doctor.
Is the flu vaccine available in Pakistan?
Yes. Seasonal flu vaccines are available through hospitals and clinics. Ask your doctor whether it is right for you and your family.
