When your child has recurring tummy pain, loose stools, constipation, reflux-like symptoms, rashes, tiredness or changes in appetite, the details can blur quickly.
A symptom diary, symptom journal or symptom log helps you keep those details in one place. It is not there to diagnose your child. It is there to make the story clearer when you talk to a GP, health visitor, paediatrician, pediatrician, nurse, dietitian or another healthcare professional.
What is a symptom diary?
A symptom diary is a simple record of what happened, when it happened, and what else was going on nearby.
For children, it can help you answer questions such as:
- When did the symptom start?
- How often is it happening?
- Is it worse at a particular time of day?
- Were there stool, food, medicine, sleep or illness changes around the same time?
- Did anything seem to help?
The aim is a clearer timeline, not perfect data.
What to record in a child symptom diary
Houston Methodist’s symptom diary guidance recommends recording details such as date, symptoms, timing, duration, severity, possible triggers, medications or remedies, and response. For children, you can keep that same shape but use parent-friendly wording.
| Field | What to write | Example |
|---|---|---|
| Date and time | When it happened, roughly | Tuesday evening, after nursery |
| Symptom | What you noticed | Tummy pain, loose poo, bloating, nausea |
| Duration | How long it lasted | About 20 minutes |
| Severity | How noticeable it seemed | Mild, moderate, severe, or 1 to 5 |
| Stool or nappy/diaper | Any relevant poo, poop or wet nappy details | Bristol 6, watery, hard, pale, more frequent |
| Food and drink | Meals, snacks, new foods, feeds or formula changes | Pasta, yoghurt, apple juice, breastfeed, bottle |
| Medicines or remedies | Medicines, antibiotics, pain relief, rehydration fluids, creams | Paracetamol, antibiotic day 3 |
| Context | Sleep, illness, stress, travel or unusual routine | Poor sleep, birthday party, long car journey |
| What happened next | Whether it settled, worsened or came back | Settled after rest, returned overnight |
A simple symptom diary template
You can copy this structure into a notebook, notes app, spreadsheet or tracking app:
| Date/time | Child | Symptom | Severity | Stool/nappy | Food/feed nearby | Medicine/context | Notes |
|---|---|---|---|---|---|---|---|
| Tuesday 6pm | Freddie | Tummy pain | 3/5 | Bristol 5 | Beans on toast, yoghurt | Tired after nursery | Settled after bath |
| Wednesday morning | Freddie | Loose poo | 2/5 | Watery, greenish | Formula bottle | Mild cold | Called GP if continues |
If your child has no symptoms on a day, it can still help to record “no symptoms noticed”. That makes gaps clearer later.
How often should you record symptoms?
Start small. You do not have to log every tiny detail.
For many families, the most useful rhythm is:
- log symptoms when they happen
- log stools or nappies when they seem relevant
- log medicines and important context
- add a short daily note if the day was unusual
If tracking starts making you more anxious, simplify it. A diary should reduce the pressure of remembering, not make you scan your child constantly.
Paper diary or app?
Paper can be good if it is always nearby and easy for you to use.
An app can help when:
- you want to add entries quickly
- more than one profile is involved
- you want food, stool, medicine and symptoms in one timeline
- you want an exportable summary for an appointment
- you tend to lose notes or forget where you wrote things
Acornio brings symptoms, food or feed notes, stools, medicines and notes into one calm timeline. It is designed to support appointment preparation without making diagnostic claims.
How to avoid self-diagnosing from a diary
A symptom diary can show that two things appeared near each other. It cannot prove one caused the other.
Try wording patterns like this:
We noticed loose stools were logged on several days when yoghurt was also logged. We are not sure if it is connected, but wanted to ask.
Avoid:
Yoghurt is definitely causing this.
That small change keeps the diary useful and honest.
When to speak to a healthcare professional
Speak to a GP, health visitor, paediatrician, pediatrician or another healthcare professional if symptoms are worrying, worsening, recurring, not settling, or affecting feeding, hydration, growth, sleep or normal activity.
Seek urgent help if your child seems very unwell, has severe or worsening pain, signs of dehydration, blood in stool or vomit, breathing difficulty, swelling of the lips or face, or symptoms that feel sudden or serious.