The First 72 Hours After a Nut Allergy Diagnosis in the UK

Nobody hands you a manual when a GP or A&E doctor says the words “nut allergy”. You get a leaflet, maybe a prescription, and then you’re back in the car park trying to work out how you’re supposed to feed yourself, or your child, that evening.

This isn’t medical advice — for anything about diagnosis, testing or treatment, that’s your GP or allergist’s job. What follows is the practical, kitchen-table version of what tends to happen in the first 72 hours, and what’s actually useful to do with that time.

Day one: getting through the shock

The diagnosis might have come after a frightening reaction, or quietly from a blood test result read out over the phone. Either way, the first day is rarely about logistics. It’s about processing that something in your (or your child’s) everyday world can now cause serious harm.

A few things that genuinely help in those first hours:

• Write down what happened, if there was a reaction. Symptoms, timing, what was eaten, how long it took to settle. You’ll be asked this repeatedly by different clinicians, and memory fades fast under stress.
• Don’t clear the whole kitchen at 11pm. It’s tempting, but a rushed, tired sweep misses things and burns you out before the real work starts.
• Ask specifically what was prescribed and why. If you’ve been given an adrenaline auto-injector, make sure you understand — from the person prescribing it — when and how it should be used, and get a demonstration if one hasn’t been offered.

Day two: paperwork and prescriptions

By day two, most people are functional enough to start on the admin, which turns out to matter more than it sounds.

• Collect your prescription for any adrenaline auto-injector as soon as it’s ready. Pharmacies can be out of stock of specific brands, so ask if there’s a wait and what the alternative is.
• Ask your GP surgery about a written allergy action plan. This is the document that tells anyone helping you (or your child’s school, later on) exactly what symptoms mean what, and what to do. If one hasn’t been offered, ask for it directly — it’s standard practice and you’re entitled to ask.
• Check the referral to an allergy clinic has actually been made. GPs can refer, but NHS allergy clinic waiting lists vary hugely by area, sometimes many months. Ask for a timeframe and how to chase it if you hear nothing.
• Register the diagnosis with anyone who needs to know now — a partner, a childminder, a school office — even before you have every detail nailed down. Vague-but-informed is safer than everyone finding out later.

Day three: the kitchen and the shopping list

This is usually when people start looking at food differently, sometimes for the first time in their lives.

• Do one proper cupboard audit, ingredient by ingredient, rather than trying to memorise “nut-free brands” from a forum. Ingredients change; specific products get reformulated.
• Learn the difference between “contains” and “may contain” — they mean different things under UK labelling law, and conflating them either makes you overly restrictive or, worse, not restrictive enough. (More on this below.)
• Don’t throw everything shared away immediately. If you live with people who don’t have the allergy, a total nut ban isn’t always necessary or sustainable — a system of separation (storage, utensils, a designated allergen-free zone) is often more realistic long-term than an outright household ban.
• Start a short list of “safe” everyday items — bread, cereal, snacks — that you’ve checked and trust. It gives you something to fall back on when decision fatigue hits, which it will.

What can wait

Not everything needs sorting in 72 hours, and trying to do it all at once is how people burn out in week one.

• Long-haul travel plans, school trips, birthday parties — these matter, but they can wait until you’re past the initial adjustment.
• Telling every extended family member and friend individually — a single clear message (even a group text or a note home from school) usually works better than repeating yourself twenty times while exhausted.
• Becoming an expert overnight. You don’t need to know everything about immunology by Friday. You need to know enough to keep the next meal safe, and enough to make it to your allergy clinic appointment with the right questions.

FAQ

Do I need to see an allergist immediately, or can it wait for the NHS referral? If you’ve had a severe reaction, A&E or your GP will usually flag urgency in the referral. For most diagnoses made via blood test or skin prick without anaphylaxis, the standard NHS pathway applies — but it’s reasonable to ask your GP how urgent your specific case is and to chase the referral if you hear nothing within a few weeks.

Should I remove all nuts from the house straight away? Not necessarily, and definitely not in a panic on day one. Many households manage safely with careful separation rather than a total ban, especially if other family members eat nuts regularly. Discuss risk tolerance with your allergy team once you’ve had your clinic appointment.

What if I haven’t been prescribed an adrenaline auto-injector yet? Ask your GP directly whether one is appropriate for your situation — this is a clinical decision based on your specific diagnosis and history, not something to self-determine. If it feels like it’s been overlooked, it’s fine to ask again.

How do I cope with the anxiety in these first few days? It’s completely normal to feel overwhelmed. Focus on the practical steps above rather than trying to eliminate every possible risk at once — a calm, systematic approach over the following weeks will get you further than a frantic first 72 hours. If anxiety persists, mention it to your GP; support exists beyond the physical management of the allergy.

For a broader grounding in how allergic reactions actually work, see Allergies 101.