This age-based checklist helps you decide whether a child’s symptoms call for emergency help, a same-day pediatrician call, or careful home monitoring. It also gives you a simple symptom log to use during every illness.
Overview
When a child is sick, the most useful question is not only “What is the temperature?” It is also “How is my child breathing, responding, drinking, and behaving?” Age matters, especially for newborns and young infants, but a child’s overall appearance and rate of change matter at every stage.
This guide is for general decision support, not diagnosis. If your child has a serious medical condition, was born prematurely, takes medicines that affect immunity, or has a care plan from a clinician, follow that plan first. When you are unsure, call your pediatrician, an after-hours nurse line, or local emergency services for guidance.
Red, yellow, and green actions
| Action | Use this action when |
|---|---|
| Red: emergency care now | Your child is struggling to breathe, is blue or gray, is difficult to wake, is unresponsive, has a seizure, has severe bleeding, or appears critically ill. Call emergency services and follow the dispatcher’s instructions. |
| Yellow: call promptly | Your child has a concerning fever, repeated vomiting or diarrhea, possible dehydration, a spreading or unusual rash, worsening pain, or symptoms that are not improving. Young infants need a lower threshold for calling. |
| Green: monitor and support | Your child is alert, breathing comfortably, drinking some fluids, urinating, and has mild symptoms that are stable or improving. Continue observation and contact the pediatrician if the pattern changes. |
What to track
Record changes rather than relying on memory. A short, organized description can help a clinician decide how urgently your child should be evaluated.
Age-based decision checklist
- Birth to 3 months: Call a clinician promptly for a rectal temperature of 100.4°F (38°C) or higher. Do not wait for the fever to rise or rely on home treatment alone. Seek emergency help for breathing difficulty, blue or gray color, unusual limpness, inability to wake, a seizure, or a baby who looks seriously ill.
- 3 to 12 months: Call promptly for fever in a young or medically vulnerable infant, fever that persists or returns, poor feeding, markedly fewer wet diapers, repeated vomiting, breathing changes, or a child who is unusually sleepy or difficult to comfort. Emergency signs take priority over the temperature number.
- 1 to 5 years: Watch breathing effort, alertness, fluid intake, urination, pain, and the appearance of any rash. Call the pediatrician for worsening symptoms, persistent fever, dehydration concerns, significant pain, or a child who is not acting normally after comfort measures.
- 6 years and older: Ask about the child’s symptoms when they can describe them, but continue to watch appearance and behavior. Call for breathing trouble, confusion, severe or localized pain, dehydration, persistent vomiting, a concerning rash, or symptoms that interfere with drinking, walking, sleeping, or normal activity.
Symptoms that need special attention
- Breathing: Look for ribs pulling in, nostrils widening, grunting, pauses, noisy breathing, inability to speak or cry normally, or a child who is working hard to breathe. Do not wait for a home oxygen reading if your child visibly struggles.
- Dehydration: Track drinking and wet diapers or bathroom trips. A dry mouth, no tears, unusual sleepiness, dizziness, very dark urine, or significantly reduced urination warrants a prompt call.
- Vomiting and diarrhea: Note frequency, blood or green material, abdominal swelling, severe pain, and whether fluids stay down. Repeated vomiting with lethargy or dehydration requires urgent advice.
- Rash: Seek urgent help for a rash with breathing difficulty, facial swelling, faintness, or a child who looks very ill. A rapidly spreading rash, purple or bruise-like spots, or fever with a concerning rash should be assessed promptly.
- Seizure or unresponsiveness: Protect the child from injury, place them on their side if possible, do not put anything in their mouth, and call emergency services. Note the start time and do not restrain the movements.
One-page symptom log
Write down the child’s age, medical conditions, medicines and allergies; the time symptoms began; the highest measured temperature and method used; breathing changes; fluids taken; vomiting or diarrhea episodes; wet diapers or urination; pain location; rash changes; and what happened after rest, fluids, or prescribed medicine. Bring the log, medicine containers, and relevant test results to the visit. For related fever-measuring guidance, see the Baby Fever Temperature Guide.
Cadence and checkpoints
Recheck a sick child at regular intervals appropriate to the illness rather than watching continuously. During waking hours, reassess breathing, alertness, drinking, and urination whenever symptoms change. At night, follow the clinician’s instructions; do not wake a comfortably sleeping child solely to obtain a temperature unless you were advised to do so.
Call the pediatrician sooner if the child is getting worse, cannot keep fluids down, is urinating much less, develops new pain, or changes from alert and interactive to unusually sleepy or difficult to console. Keep emergency numbers and the pediatrician’s after-hours instructions accessible, especially during respiratory-virus season.
How to interpret changes
A single temperature reading rarely tells the whole story. Compare the reading with the child’s behavior, breathing, hydration, and trend. Fever medicine may lower discomfort without treating the cause, so do not use an improved temperature alone as proof that the illness is harmless. Use only medicines and doses recommended for your child’s age and weight; never give aspirin to a child unless specifically directed by a clinician.
Before calling, ask: Is the child breathing comfortably? Can they be awakened and make normal eye contact? Are they drinking and urinating? Is the pain manageable? Is the rash changing quickly? If any answer is alarming, choose the more urgent action. A clinician can help you decide what to do next; waiting for a perfect symptom description should not delay emergency care.
When to revisit
Save or print this checklist before the next illness, then update your symptom log whenever your child is sick. Revisit the guide whenever your child moves into a new age bracket, develops a chronic condition, receives a new diagnosis or medicine, or your pediatrician gives you an individualized action plan. Review it at least quarterly so emergency contacts, medication information, and care instructions remain current.
For ongoing preparation, pair this checklist with the Well-Child Visit Checklist and keep vaccination records available through the Childhood Vaccine Schedule Guide. During each illness, record the first symptom, the most concerning change, and the advice received. That habit turns a stressful episode into useful information for the next call and helps you recognize when your child’s usual pattern has changed.
