# Baby Reacting to Dairy? Why Writing It Down Matters More Than Guessing When your baby seems uncomfortable after milk, a structured food and symptom log does more for you than hours of anxious Googling. Here is why recording everything helps your paediatrician help you. --- Your baby is gassy, fussy, and maybe has some weird-looking nappies after a milk-based feed. Your first instinct is probably to search for answers: is it a milk protein allergy? Lactose intolerance? Something else entirely? We did the same thing. What we eventually learned was that no amount of late-night reading could replace a structured record of what our baby ate and when symptoms showed up. That record is what gave our paediatrician the information needed to actually help. ## Memory is not a system When you are stressed and sleep-deprived, you will not remember whether Tuesday's fussiness happened before or after the yoghurt. You will not recall if the rash on Wednesday was the same spot as last week's or somewhere new. And you will definitely not be able to reconstruct two weeks of meals and symptoms from memory during a 10-minute paediatrician appointment. A written log changes that. Even a basic one: date, time, what was eaten, symptoms observed, and when those symptoms appeared. That is it. That is enough to turn a confusing mess of 'he seems uncomfortable sometimes' into a timeline your doctor can actually use. ## Milk allergy and lactose intolerance are not the same thing Briefly, because this matters for what you track: a milk protein allergy is an immune reaction to cow's milk proteins. Symptoms can be fast (hives, swelling) or slow (gut issues, eczema, colic). Lactose intolerance is a digestive issue where the body cannot break down milk sugar. It is extremely rare as a lifelong condition in babies ([AAP clinical report, 2006](https://condor.depaul.edu/mfiddler/hyphen/lactoseIntolAAP2006.pdf)), though it can appear temporarily after a stomach bug. The two conditions need completely different management, which is why your paediatrician needs a clear record to distinguish between them. You do not need to become an expert in either. You just need to log what happens so your doctor can do their job. ## What a useful elimination log looks like If your paediatrician suggests cutting dairy from your baby's diet (or from yours if you are breastfeeding), the quality of your log determines how useful the next appointment will be. A good log records: every single meal (including ingredients you might not think about, like butter in mashed potato or milk powder in bread), any symptoms with timestamps, and ideally a note about your baby's general mood. Patterns often take a few days to emerge. Symptoms might improve by day three of no dairy. A single accidental exposure might cause a clear spike 24 hours later. Without a log, those patterns stay invisible. The app makes this logging quick and keeps it organised, but the interpretation always belongs to your paediatrician. --- **Tracking an elimination diet from memory does not work** Log every meal and symptom, backdate entries when you spot a pattern late, and export a clean timeline for your paediatrician appointment. [Download free](https://apps.apple.com/au/app/baby-allergy-food-tracker/id1445346223) --- ## Related articles - [Building a Food Diary Your Paediatrician Will Actually Thank You For](https://baby-allergy-tracker.com/blog/how-to-create-baby-food-log-pediatrician/)