Is My Child Sick… or Is This Normal?

A Paediatrician's Guide to Common Childhood Symptoms

As a paediatrician, I hear the same questions from parents again and again:

"Doctor, is this normal?"
"Does my child need antibiotics?"
"Should I bring my child to the hospital?"
"My child is sick again—is something wrong with their immunity?"

The truth is, children get sick—a lot. This is especially common during the early years, when they start daycare, preschool or school and are exposed to many new viruses.

While many childhood illnesses are mild and resolve on their own, some symptoms deserve medical attention. Knowing the difference can help parents feel more confident about when to care for their child at home and when it's time to seek medical advice.

In this article, Dr Rakhee Yadav, Consultant Paediatrician at KPJ Damansara Specialist Hospital, shares the childhood symptoms parents ask about most often—and explains what's usually normal, what to watch for, and when it's time to seek medical advice.

1. Fever: When Should I Actually Worry?

Fever is one of the body's natural responses to infection. While the number on the thermometer is important, how your child looks and behaves is often even more important.

A child who has a fever but remains alert, is drinking fluids, passing urine and playing between fever episodes is generally less concerning than a child with a lower temperature who is unusually sleepy, difficult to wake or breathing abnormally.

Seek urgent medical attention if your child:

• Has difficulty breathing

• Is difficult to wake

• Has a seizure

• Shows signs of severe dehydration

• Develops a rash

• Appears very unwell

Remember: Fever is not the enemy. It's the underlying illness that needs to be assessed.

2. Fever That Keeps Coming Back — Is That Normal?

Children can experience several viral infections one after another, particularly during their first few years in daycare or preschool.

It may feel as though your child has been sick for months, when in reality they have recovered from one infection before catching another.

However, persistent fever, fever that returns after your child has fully recovered, or recurrent episodes accompanied by weight loss, poor growth, night sweats or prolonged lethargy should be assessed by a doctor.

3. Cough: Is It Just a Viral Infection?

Most acute coughs in children are caused by viral infections.

Even after the infection has resolved, the airways may remain irritated, causing the cough to last for several weeks.

A cough should be assessed if it is accompanied by:

• Difficulty breathing

• Persistent wheezing

• Chest pain

• Coughing up blood

• Poor feeding

• Significant lethargy

A cough that repeatedly occurs at night, during exercise or without an obvious infection may also require evaluation for conditions such as asthma.

4. Why Does My Child's Runny Nose Last for Weeks?

Children can catch one cold after another, especially if they attend daycare or school.

One cold may last one to two weeks, and before it has completely resolved, another virus may come along. This can make it seem as though your child has had a runny nose for an entire month.

Persistent nasal symptoms may also be related to allergic rhinitis or enlarged adenoids.

If your child has ongoing nasal blockage, mouth breathing, snoring or symptoms that interfere with sleep, it's worth discussing these with your paediatrician.

5. Green Mucus — Does My Child Need Antibiotics?

Not necessarily.

Mucus often changes from clear to yellow or green as an infection progresses.

Green mucus alone does not mean your child has a bacterial infection or needs antibiotics.

Antibiotics treat bacterial infections—they do not work against viruses.

Rather than focusing on the colour of the mucus, doctors consider your child's symptoms, how long they have been unwell, examination findings and their overall condition.

6. Vomiting: When Is It Dangerous?

Vomiting is common in children and may occur with viral infections, food-related illness, fever or other conditions.

The biggest concern with vomiting is dehydration.

Watch for signs such as:

• Reduced urination

• Dry mouth

• No tears when crying

• Unusual sleepiness

• Inability to keep fluids down

Seek urgent medical attention if your child has:

• Green (bilious) vomiting

• Blood in the vomit

• Severe abdominal pain

• A swollen abdomen

• Persistent vomiting

• Vomiting accompanied by severe headache or neurological symptoms

For babies, persistent vomiting or poor feeding should also be assessed promptly.

7. Diarrhoea: When Should I See a Doctor?

Most childhood diarrhoea is caused by infections and settles with supportive care.

The key is maintaining hydration.

Offer frequent fluids and continue feeding where possible. For younger children, oral rehydration solution can be particularly helpful when there is significant fluid loss.

Seek medical attention if your child:

• Shows signs of dehydration

• Is unable to drink

• Has blood in the stool

• Has persistent severe abdominal pain

• Has prolonged diarrhoea

• Appears unusually lethargic or unwell

8. Milk Coming Out of a Newborn's Nose — Should I Panic?

This can look frightening, but it is often harmless.

Newborns have immature swallowing and coordination, so small amounts of milk can sometimes come back up through the nose after feeding.

If your baby is breathing comfortably, feeding well and gaining weight appropriately, occasional episodes are usually not a cause for concern.

However, recurrent choking, coughing during feeds, breathing difficulties, poor weight gain or frequent milk coming through the nose should be assessed to rule out conditions such as a cleft palate or tongue-tie.

9. Wheezing or Just Noisy Breathing?

Not every noisy breath is wheezing.

True wheezing is usually a musical or whistling sound that's more noticeable when breathing out.

Parents often use the word "wheezing" to describe any noisy breathing, but these sounds may also come from the nose, throat or upper airway. This is why listening to the child and examining them is important.

Seek urgent medical attention if your child is:

• Breathing very fast

• Pulling in around the ribs or neck while breathing

• Struggling to speak or feed

• Turning blue

• Appearing exhausted from breathing

10. When Does a Sore Throat Need Medical Attention?

Most sore throats in children are caused by viral infections and improve with time. However, seek medical assessment if your child has: Difficulty breathing Difficulty swallowing Drooling Severe dehydration Significant neck swelling Severe one-sided thro

Most sore throats in children are caused by viral infections and improve with time.

However, seek medical assessment if your child has:

• Difficulty breathing

• Difficulty swallowing

• Drooling

• Severe dehydration

• Significant neck swelling

• Severe one-sided thro

• Difficulty breathing

• Difficulty swallowing

• Drooling

• Severe dehydration

• Significant neck swelling

• Severe one-sided throat pain

• Appears very unwell

Persistent or recurrent sore throats may also require further evaluation.

11. "My Child Is Always Sick!"

This is one of the biggest concerns I hear from parents.

Sometimes, it is completely normal.

Young children can experience multiple respiratory infections each year, particularly when they first start daycare or preschool. Their immune systems are encountering many viruses for the first time.

What matters is not simply how often your child gets sick, but how they recover and whether they are growing and developing normally.

We become more concerned when infections:

• Are unusually severe

• Require repeated hospitalisation

• Are caused by unusual organisms

• Don't respond as expected to treatment

• Are associated with poor growth or other concerning symptoms

So… When Should Parents Worry?

You don't need to become an expert in every childhood illness.

Instead, ask yourself:

• Is my child breathing comfortably?

• Are they drinking fluids and passing urine?

• Are they alert and responsive?

• Are they generally improving or getting worse?

• Does something about their behaviour or appearance feel significantly different?

Most importantly, trust your instincts.

You know your child better than anyone else.

Sometimes, your child simply needs fluids, rest, cuddles and time. Other times, they need a medical assessment.

The goal isn't to panic over every symptom—but to recognise when a symptom is telling you that your child needs help.

A Final Word from Dr Rakhee

As a paediatrician, my advice is simple:

Don't just treat the thermometer, the mucus or the cough—look at your child as a whole.

Numbers and individual symptoms only tell part of the story. How your child looks, behaves, breathes, drinks and responds often provides the clearest picture of how unwell they really are.

If you're ever unsure, don't hesitate to seek medical advice. It's always better to ask questions early than to worry alone.