How to Recognise When a Child Is Sick

Watching for Warning Signs

As a nanny, you spend a lot of time with children, which means you often notice when something is off before parents do. Trusting your instincts and knowing what to look for is an important part of your role.

Common Signs of Illness

Fever — A temperature above 38°C (100.4°F). Use a thermometer to check.

Loss of appetite — Refusing food they normally enjoy.

Unusual tiredness — Sleeping much more than normal or lacking energy.

Crying more than usual — Especially in babies and toddlers who cannot explain how they feel.

Vomiting or diarrhea — Watch for dehydration signs: dry mouth, no tears, dark urine.

Rash — A rash that appears suddenly, especially with fever, needs medical attention.

Difficulty breathing — Fast breathing, wheezing, or the nose flaring — always urgent.

When to Call Parents Immediately

Fever above 39°C (102.2°F) or any fever in a baby under 3 months

Difficulty breathing

Loss of consciousness

Severe allergic reaction (swelling of face/throat, hives)

Seizure

Injury that may need stitches

Your instinct tells you something is seriously wrong

When to Call Emergency Services

Call 000 (Australia), 999 (UK), or 911 (USA/Canada) for life-threatening emergencies: the child is not breathing, is unconscious, has severe bleeding, or is having a seizure that does not stop.

Keeping Notes

When a child is unwell, write down their temperature, what they ate, when symptoms started, and any medications given. Parents and doctors will find this information very helpful.