Keeping a food reaction diary: Details That Help Your Clinician

A food reaction diary helps you describe an event accurately when an appointment happens days or weeks later. It supports a clinical assessment; it does not prove that the last food eaten caused the symptoms. A simple, factual record is more useful than a complicated theory about every ingredient.

Put care before recording

If your child is struggling to breathe, has tongue or throat swelling, collapses or becomes markedly floppy, get emergency help immediately. Follow their prescribed emergency plan if they have one. Do not delay treatment to take a photograph or finish an entry.

For a suspected reaction that is not an emergency, seek advice about the next step and whether to avoid the suspected food pending assessment. Our symptoms guide explains signs that need prompt attention. Never give a food again simply to see whether the diary pattern repeats.

Use a consistent set of fields

You can use a notebook or a document that caregivers share privately. The following headings make the information easier to review.

• Food and time: What was eaten and when, including milk feeds and snacks.
• Ingredients: Brand, recipe and label information where known.
• Amount: An approximate quantity, without guessing precision.
• Symptoms: What you observed, where it occurred and when it began.
• Course: How long symptoms lasted and whether they changed.
• Treatment: Medicine or other action, time given and response.
• Context: Illness, eczema changes or other relevant events.

For example, “Raised patches appeared on the arms twenty minutes after the meal” is more informative than “The food was bad.” Record what you saw separately from what you think caused it.

Include the ordinary days

If the team asks for a food and symptom diary over several days, record normal meals and symptom free periods too. A record containing only difficult moments may leave out useful context. Ask how long to keep it and whether they want additional details about stools, growth or feeding.

Save a photo of an ingredient label when helpful. A meal described as porridge might have contained milk, nuts or another ingredient that is not obvious from its name. Ask nursery staff for the recipe or product details after an event there.

Bring the record into a care plan

Take the diary to the appointment and identify your main question. Our testing guide explains how history guides assessment rather than automatically leading to a large test panel.

The clinician may recommend a specific dietary trial, but the diary itself is not permission to remove several food groups. Agree on nutritional replacements and a review date if anything is excluded.

If different people feed your child, share the resulting plan as well as the record. Our nursery allergy guide explains how to keep instructions consistent between home and childcare.