Mustard allergy

By Symon, Every Label · June 30, 2026

Mustard allergy is an immune reaction to the proteins in mustard seed, and it is a documented cause of severe, whole-body reactions, not a minor or trivial allergy. In plain terms: your child’s immune system reads certain mustard proteins as a threat, and a reaction can run from hives to a whole-body allergic reaction that affects breathing and blood pressure, called anaphylaxis. It is a true allergy, not a sensitivity or an intolerance. One page covers both regulated kinds of mustard together, yellow or white mustard (Sinapis alba) and oriental or brown mustard (Brassica juncea), because they share the same main allergen and a mustard-allergic person avoids both. The single most important thing to understand about mustard is regulatory: it is a mandatory, named allergen on food labels in the EU, the UK, and Canada, but it is NOT a major allergen under US law, so a US label is not required to declare it. Mustard allergy is most common where mustard is a dietary staple, such as France and parts of southern Europe and the Indian subcontinent, where it is among the more frequently implicated food allergens in children, and onset is often early, frequently before age three.

If your child was just diagnosed, read this first.

This page is long on purpose. It is also the page you will come back to for years. You do not need all of it today. This week, this is what matters:

• Carry epinephrine everywhere your child goes if your allergist has prescribed it, and learn the few signs that mean use it now. That is the section to read tonight (Emergency preparedness, below). If you do not have the prescription yet, that is the first call to your allergist or pediatrician.
• Read every label, every time, and know the catch that is specific to mustard: in the US, mustard is not a required allergen, so it does not have to be called out the way milk or peanut does. It can hide inside the words “spices”, “spice blend”, “seasoning”, “natural flavoring”, and “curry paste”. In the EU, the UK, and Canada it must be named (Reading labels, below).
• The hiding places to learn are prepared mustard and the things built on it: dressings, mayonnaise, marinades, barbecue and ketchup blends, pickles, chutney, processed meats, curry pastes, and cold-pressed mustard oil (Hidden sources, below).
• Cooking does not make mustard safe. Mustard’s main proteins are heat-stable, so a cooked sauce or a baked product with mustard in it is not safer than the raw condiment (What mustard allergy is, below).
• Yellow and oriental mustard travel together. They share the main allergen, so avoidance covers both (Cross-reactivity, below).
• You do not have to understand the protein science to keep your child safe. The components and the test names are for unhurried conversations with your allergist.

Everything else here is waiting for you, in roughly the order the questions tend to come up. Read it when you want it.

Where a fact below is clinical, it carries its source. None of it is a substitute for your allergist.

What mustard allergy is, and who has it

Mustard allergy is an IgE-mediated immediate-type food allergy, and in that form it is anaphylaxis-capable, which is the reason for everything practical on this page: the auto-injector, the label habit, the written plan (Monsalve 2001). When your child eats mustard, IgE antibodies on their immune cells latch onto the mustard proteins and trigger a release of histamine and other chemicals within minutes. That release is the reaction.

Mustard is a seed, the seed of plants in the cabbage (Brassica) family, and it behaves like the more serious seed allergens rather than a mild spice sensitivity. Its main allergens are heat-stable, digestion-stable seed-storage proteins, so cooking does not reliably defuse it (Monsalve 2001). This is worth saying plainly because it runs against a common intuition: a cooked sauce, a baked product, or a simmered marinade that contains mustard is not safer than the raw condiment. That heat-stability is the reason the hidden-source list later on is so practically important.

Mustard allergy is strongly geographic. It is most common where mustard condiments and oils are dietary staples, principally France and southern Europe and the Indian subcontinent. In France it is among the more frequently implicated food allergens in children, reported across clinic case series as a notable share of childhood food allergy, with pronounced regional variation (Rance 2003). Those are clinic-population proportions, not a general-population rate, and the frequency is markedly lower in regions where mustard is eaten less, including the United States. Onset is often early, frequently before age three, and mustard is described as a hidden allergen in the infant diet because it arrives through condiments and prepared foods rather than as a recognizable whole food (Rance 2003).

Diagnosis combines your child’s history with testing, and where the result and the history disagree, a supervised oral food challenge is the reference standard (EAACI 2023). The next section is what the testing can and cannot tell you.

The components that drive severity

Mustard is not one thing to the immune system. It is a handful of proteins, and which one your child reacts to changes how serious the allergy tends to be. For mustard the proteins that carry most of the weight are the storage proteins called the 2S albumins, and there is a useful distinction between those and a protein that usually means a milder, mouth-only picture.

A standard mustard test (the skin prick, including a prick-to-prick with prepared mustard or seed, or the basic blood test to whole mustard) only tells you the immune system has noticed mustard at all, and for mustard it over-calls: a positive whole-mustard test in a child who actually tolerates mustard is common, so a positive result alone is supportive, not a diagnosis (EAACI 2023). A more detailed test, component testing, breaks that down protein by protein. The proteins that mark the serious, whole-body kind of mustard allergy are the 2S albumins, the one your allergist calls Sin a 1 in yellow mustard and Bra j 1 in oriental mustard. They are heat-stable and digestion-stable, which is why cooking does not defuse mustard and why a reaction can be whole-body (Monsalve 2001).

There is also a useful contrast. A protein called Sin a 4, a profilin, usually marks the milder picture: a positive Sin a 4 with mouth-only symptoms is often serological cross-reactivity rather than systemic disease. But this is a contrast to discuss with your allergist against your child’s actual history, not a green light, because the profilin picture can sit alongside a more serious one. The high-value move is to ask your allergist whether component testing is available and what it shows, because separating the 2S-albumin picture from the profilin picture changes how the result is read. You do not need to learn the protein names yourself. They are below.

Cross-reactivity, real and cautionary

For mustard this section is net-cautionary, so the honest version leads with what changes the plate, not with a reassurance. The one cleared cross-reaction is between the two kinds of mustard themselves; everything else a parent might hope to hear (rapeseed is fine, the pollen link is mild) is either a question to test or a finding that looks scarier on paper than it is, and neither is something this page will hand you as cleared.

The two kinds of mustard travel together. Yellow or white mustard (Sinapis alba) and oriental or brown mustard (Brassica juncea) cross-react because they share the major mustard seed-storage protein, the 2S albumin (Sin a 1 in yellow, Bra j 1 in oriental), and the two are highly similar. The practical consequence is simple: a mustard-allergic child avoids both kinds together, not just the one named on a label. This is the cleared, avoidance-direction fact this section leads with.

Rapeseed and canola: a paper resemblance, not a plate problem you act on. Mustard and rapeseed (the source of canola) are in the same plant family and their storage proteins look similar in the lab, so a test panel can light up. But documented real-world reactions to rapeseed in mustard-allergic people are essentially unreported, and refined canola oil is largely protein-free. Whether rapeseed or canola is relevant for your particular child is a question for your allergist, not something this page will clear or alarm you about; the lab resemblance alone is not a food risk to act on, and the refined-oil details belong in the cross-reactivity deep page, not here.

The mugwort-mustard pollen picture: a syndrome to confirm, not to assume. In some people, sensitization to mugwort pollen in the air comes first and mustard food reactivity follows, through shared proteins (the nsLTP Sin a 3 and the profilin Sin a 4). This is a real described picture, but it is a cross-reactivity question to test with your allergist rather than a reason to assume either that mustard is mild or that every pollen-allergic child will react to mustard. If your child has pollen allergy, especially to mugwort, it is worth naming to your allergist; the deeper version lives in the pollen and oral-allergy spoke.

The short version: for mustard the one thing that changes what is on the plate is that yellow and oriental mustard go together. The rapeseed resemblance and the pollen picture are allergist questions, not a blanket caution and not a clearance. There is no cleared “you can eat the related foods” reassurance for mustard, so this page does not give one. The depth (the seed and 2S-albumin family, and the mugwort-mustard pollen story) lives on the cross-reactivity pages; this section does not restate it.

Hidden sources

Hidden sources are the part of mustard allergy that does the most day-to-day work, because mustard is rarely eaten as a recognizable whole food and almost always arrives inside something else, and because, in the US, the law does not require it to be named at all. These are worth a careful one-time read now; after that you will spot them on your own.

Prepared mustard and everything built on it. The condiment itself is the obvious one, but prepared mustard is also a quiet ingredient in mayonnaise and many salad dressings, in marinades, in barbecue sauces and some ketchup and sauce blends, in pickles and relishes, and in chutneys and Indian-style pickles (achaar). If a sauce or dressing has a tang you cannot place, mustard is a fair suspect.

Spice blends, seasonings, and curry pastes. Mustard, and mustard flour, turn up in compound spice blends, in seasonings, and in curry pastes, where oriental mustard (Brassica juncea) is a common component. On a US label these can legally hide mustard inside a collective term (see Reading labels).

Processed meats and breads. Sausages, processed and deli meats, and some breads can carry mustard or mustard flour, often without an obvious flag.

Mustard oil, with an important distinction. Cold-pressed, unrefined, and toasted mustard oil retain mustard protein and are a real exposure, common in South Asian cooking. This is different from the reassurance some families have heard about highly refined seed oils: mustard oil in its traditional cold-pressed form is not protein-free, so treat it as a mustard source. When in doubt, treat any mustard oil as a source.

The labeling catch that makes this list matter more in the US. Mustard is a mandatory, named allergen on food labels in the EU, the UK, and Canada, but it is NOT a required allergen on US labels. The practical effect is that in the US a product can contain mustard without a “contains mustard” line, hidden inside “spices”, “seasoning”, or “natural flavoring”, while the same product in Europe would have to name it. This is covered again in Reading labels because it is the single most important mustard-specific fact.

Where the label will not help: restaurants and bulk. Restaurant dishes, bakery-counter items, and bulk-bin products are an unlabeled gap everywhere, and in the US that gap is wider because there is no required mustard call-out even on packaged food. A chef card and a direct question do more there than the label does.

The deep version of all of this, the full lexicon and the labeling-law detail, will live on the where-mustard-hides page. This section is the summary.

How exposure actually happens

The routes parents fear most are usually not the ones that cause serious reactions. Eating mustard is. The rest are lower-risk than they feel.

Eating it (high). Swallowing mustard protein is the route that causes whole-body reactions. Everything else is far behind it. Cooking does not help: mustard’s main proteins are heat-stable, so a cooked sauce, a baked product, or a simmered marinade that contains mustard stays allergenic (Monsalve 2001).

Breathing it in (low for most, an occupational exception). Mustard is low-risk to breathe in ordinary settings. The exception is aerosolized mustard flour or dust in a mill or a condiment production line, which is an occupational consideration, not a typical home or restaurant exposure.

Cooking vapor (low). Low-risk for mustard in a normal kitchen; vapor reactions are not a primary documented mustard route.

Skin and mucosal contact (low). Contact reactions to prepared mustard on the skin are described but are not the dominant systemic route; incidental mucosal contact through condiments is lower-risk than swallowing.

The dominant message for mustard is that the route to manage is the mouth: the condiment, the hidden ingredient, the oil, the spice blend. The label habit and the chef card carry most of the protection.

Reading labels

This is the habit that does the most day-to-day work, and for mustard it comes with a catch that is sharper than for almost any other allergen, because of where mustard sits in the law. The words to scan for are mustard, mustard seed, mustard flour, mustard powder, mustard oil, prepared mustard, and the plant names Sinapis alba and Brassica juncea (EU 1169; FALCPA).

Here is the catch, and it is worth saying plainly. Mustard is a mandatory, named allergen on food labels in the EU under Regulation 1169/2011 (EU 1169), in the UK under the retained version of those rules (UK FIR 2014), and in Canada as a priority allergen (Canada 2011). But mustard is NOT one of the major allergens under US law: it was not in the original FALCPA list and it was not added by the FASTER Act, which added sesame as the ninth (FALCPA; FASTER Act 2021). So a US ingredient label is not federally required to declare mustard at all. A reader who relies on the bold “contains” line is protected in the EU, the UK, and Canada, but not in the US, where mustard can sit legally inside compound terms.

That makes a short list of terms into slow-down signals on a US label: “spices”, “spice blend”, “seasoning”, “natural flavoring”, and “curry paste” can each contain mustard with no allergen call-out. When a term is unclear and the manufacturer will not say, treat it as a reason to call the company, not a reason to assume it is safe. Outside the US, mustard inside one of those compound terms still has to be named, so the same word carries different weight depending on where the product was labeled.

Then there are the precautionary labels: “may contain mustard”, “made in a facility that processes mustard”. These are voluntary and unregulated wherever they appear, and they are even less consistently applied for mustard in the US, where mustard is not a required allergen in the first place. How strictly you treat them is a personal call along a spectrum, weighing a real but variable risk against ruling out a large share of the grocery store, and the cautious default for a history of systemic reactions leans toward avoiding them. This page will not pick that threshold for you; that line is yours to set with your allergist.

Severity, and what predicts a bad reaction

The strongest population-level markers of a severe mustard reaction are sensitization to the 2S albumins, Sin a 1 in yellow mustard and Bra j 1 in oriental mustard, which are heat-stable and dominate whole-body reactions, and to the nsLTP Sin a 3, which marks a systemic, cofactor-amplifiable picture (Monsalve 2001, EAACI 2023). A history of a previous systemic reaction is the next strongest input. Mustard has no single cofactor syndrome of its own, but general cofactors such as exercise, NSAID painkillers, alcohol, and intercurrent illness can lower the reaction threshold on a given day, most relevant in the nsLTP (Sin a 3) picture.

Here is the part that justifies always carrying epinephrine when your allergist has prescribed it. The size of the last reaction does not reliably predict the next one, and mustard is a documented cause of anaphylaxis. A child whose only reaction so far was mild can still have a worse one next time. That is not a reason to live in fear; it is the single reason the auto-injector travels with the child.

Emergency preparedness

Mustard anaphylaxis is treated epinephrine-first. Epinephrine is the first-line treatment for a severe reaction, not an antihistamine and not a wait-and-see. If you see anaphylaxis, you give epinephrine and then you call emergency services.

The signs that mean epinephrine now include any two body systems reacting at once (for example hives plus vomiting), or any single severe sign on its own: trouble breathing, throat tightness, a hoarse or weak cry, repetitive coughing, pale or floppy appearance, or a sense of impending doom in a child old enough to say so. When you are unsure, the guidance is to give epinephrine, because the danger of withholding it in a true reaction is far greater than the danger of giving it when it turns out you did not need to.

After giving epinephrine, call emergency services and lay the child down with legs raised, unless breathing is the main problem, in which case let them sit up. A second dose may be needed if there is no improvement in about five minutes, especially if the reaction progresses to low blood pressure, airway trouble, or a second wave hours later (NIAID 2017). Every mustard-allergic child should have a written anaphylaxis action plan and the epinephrine auto-injectors their allergist prescribes, going everywhere the child goes.

This section is general. Your child’s own plan is the specific one, and it is the one to follow.

When you can’t tell what’s happening

The hardest moments are usually not the clear reactions. They are the ambiguous ones. A flushed cheek after a new sauce. A single cough. A child who says their tummy hurts an hour after a snack you did not pack at a barbecue full of dressed salads and marinated meat. Telling the start of a reaction apart from an ordinary toddler complaint is genuinely hard, and it does not resolve cleanly from across the room.

The posture that works is to treat the spectrum, not to diagnose it in the moment. Know your action plan’s override signs cold, watch whether more than one body system is involved rather than fixating on a single symptom, and accept that you will sometimes give epinephrine or call the allergist for something that turns out to be nothing. That is the system working the way it is supposed to.

The competence here builds slowly, over many ambiguous afternoons. It shows up as a shorter pause before you act.

Treatment options

Strict avoidance is the floor, and for mustard the floor is essentially the whole of it, because there is no active treatment. Avoidance plus a written action plan plus the epinephrine your allergist prescribes is the standing setup for a mustard-allergic child (NIAID 2017). Because yellow and oriental mustard travel together (see Cross-reactivity), avoidance covers both kinds, and it extends across the broad hidden-source surface, from condiments and dressings to spice blends, curry pastes, processed meats, and cold-pressed mustard oil.

Mustard is different from peanut in one important way: there is no approved or established mustard treatment. There is no mustard version of an oral-immunotherapy product, there is no established mustard oral immunotherapy or sublingual immunotherapy in standard care, and there is no mustard-specific biologic. The anti-IgE biologic omalizumab is approved in some places for IgE-mediated food allergy in general, but it is not a mustard-specific treatment and is not a mustard option this page asserts. The landscape is tracked, not prescribed; if an active mustard protocol is established later, that is a change worth asking your allergist about.

Not medical advice. Whether and how to manage this is a conversation with your allergist.

Day-to-day living

School and day care. A mustard-allergic child needs a written plan on file, epinephrine truly accessible, trained staff, and a clear routine for snacks, classroom parties, cooking projects, and substitute teachers. In US public schools, a 504 plan is the usual way to put that in writing. Flag the foods that quietly carry mustard: dressed sandwiches, processed deli meats, dips, and barbecue or marinade dishes at class events. In a US setting, remind staff that mustard is not a required label allergen, so a packaged snack that looks cleared may not be.

Restaurants. The risk is hidden mustard more than an obvious menu item. Dressings, mayonnaise, marinades, barbecue sauces, pickles, processed meats, Indian and other curry dishes, and anything described as having a tang or a glaze are higher-risk. A chef card that names mustard and asks specifically about prepared mustard, mustard flour, and mustard oil does more than a verbal order across a loud kitchen.

Travel. Bring more epinephrine than you think you need, carry food you trust, and look up pharmacies and emergency numbers before you land. Mustard is heavily used in French and other European cooking and across South Asian cuisine (mustard oil and mustard-seed tempering), so confirm local dishes carefully. The label rules also change by country: mustard is named on EU, UK, and Canadian labels but may be unlabeled on a US product.

Holidays and gatherings. Barbecues, deli and charcuterie platters, dressed salads and slaws, pickles and chutneys, and curry dishes are the mustard-dense settings. Bringing your child’s own food and being plain with hosts beats hoping a buffet is safe.

Prognosis and outgrowing

Mustard is generally described as a frequently persistent food allergy, with onset often early, before age three. A reliable, population-validated figure for how often children outgrow it is not established in the research the way it is for milk or egg, so this page does not give an outgrow percentage it cannot stand behind (Rance 2003). The honest statement is that mustard allergy frequently persists and that a precise resolution rate is not settled.

The qualitative direction is the same as for other seed allergies: a falling mustard (or mustard-component) specific IgE over serial testing is the encouraging sign, while a high or rising level favors persistence. These are directional indicators, not validated quantitative predictors for mustard specifically. Reassessment cadence is individualized to your child’s history rather than set to a fixed mustard interval, and the one definitive test of outgrowing it is a supervised oral food challenge (EAACI 2023). Falling numbers are encouraging but supportive, not proof, and reintroducing mustard at home on the strength of a falling number is not the move.

Questions for your allergist

You do not have to walk in knowing the science. You have to walk in with the right questions, and these are them.

1. Because mustard is not a required allergen on US labels, how should I read for it in spice blends, seasonings, and natural flavoring when I am shopping in the US versus the EU, UK, or Canada?
2. Cooking does not destroy mustard’s main proteins, so should I treat cooked and baked products with mustard in them as carefully as the raw condiment?
3. Is my child’s reaction driven by the stable 2S albumin (Sin a 1 or Bra j 1, the systemic-risk marker) or more by a profilin (Sin a 4, more often mouth-only), and does component testing change how we avoid?
4. Should I treat both yellow and oriental mustard as off-limits, and how far does that extend across condiments, spice blends, curry pastes, and mustard oil?
5. My child has pollen allergy. Does the mugwort-mustard connection mean we should test mustard specifically, or treat any related foods as questions?
6. Mustard oil comes up in our cooking. Is cold-pressed or toasted mustard oil a risk for my child, and how is it different from a refined oil?
7. When and how should we reassess to see if the allergy is resolving, and when is a supervised challenge appropriate?
8. What will epinephrine actually cost us, and what does our insurance cover?

The frame: how to hold this

There are two worlds, and a severe food allergy moves a family from one into the other. In the recoverable world, a mistake is a lesson. A forgotten jacket is a cold afternoon. In the irrecoverable world, one wrong protein is not a lesson, because the cost of the error can be the child. When someone tells an allergy parent to relax, they are speaking from the first world to someone who has had to move to the second. They think the parent is anxious. The parent is not anxious. The parent is calibrated.

The work, then, is to sort what is on your side of the line from what is not. On your side: the labels you read and re-read, the component testing you ask about, the convincing history you refuse to let a negative test overrule, the epinephrine that travels with the child, the chef card that names prepared mustard and mustard oil, the plan on file at school. Not on your side: a law that names mustard on a French label and stays silent on the American one, the kitchen that brightens a sauce with prepared mustard and does not say so, the spice blend that hides it inside one word, the relative who thinks one bite is kindness. You do the things on your side fully, and you stop apologizing for them. And you hold, without pretending otherwise, that the other side is real and partly random, and that a stacked defense reduces the risk without ever closing the gap to zero.

Mustard carries a particular version of this, because whether your child is protected by the label in front of you depends on which country printed it. That is real, and it is unfair, and it is exactly the kind of thing the label habit and the chef card are built to cover. This page does not promise safety. It lays out the layers and names the gap, and it leaves the calibration to you and your allergist, who actually know your child.

Related pages on this site

• Where mustard hides, the deep label-reading version
• Mustard cross-reactivity: yellow and oriental mustard, rapeseed, and the mugwort-mustard picture
• Seed cross-reactivity
• Seed storage-protein (2S-albumin) cross-reactivity
• Oral allergy syndrome, birch and PR-10
• Reading labels when an allergen is not required: the US-versus-EU mustard gap
• Building a mustard-allergy 504 plan
• Restaurants with a mustard-allergic child

These companion pages are being written and will be linked here as each one goes live.

Frequently asked questions

Does a US food label have to say if it contains mustard?

No. Mustard is not one of the major allergens under US law, so a US ingredient label is not federally required to declare it, and it can be hidden inside terms like “spices”, “seasoning”, or “natural flavoring” (FALCPA; FASTER Act 2021). In the EU, the UK, and Canada mustard is a mandatory, named allergen and must be declared (EU 1169). For a US product, you cannot rely on a bold “contains” line; scan the soft terms and call the company when unsure (see Reading labels).

Where does mustard hide?

In prepared mustard and the many things built on it: mayonnaise, salad dressings, marinades, barbecue sauces and some ketchup blends, pickles, chutney and achaar, processed meats, and some breads. It is also in spice blends and curry pastes, and in cold-pressed or toasted mustard oil, which retains protein (see Hidden sources).

Does cooking or baking make mustard safe?

No. Mustard’s main proteins, the 2S albumins, are heat-stable and digestion-stable, so cooking, baking, and simmering do not make a mustard-containing food safe for a mustard-allergic child (Monsalve 2001). A cooked sauce with mustard in it is not safer than the raw condiment.

If my child reacts to one kind of mustard, do they have to avoid the others?

Generally yes. Yellow or white mustard and oriental or brown mustard share the main allergen and cross-react, so most allergists treat both as off-limits together. Confirm the specifics with your allergist.

Will my child outgrow mustard allergy?

Mustard is generally described as frequently persistent, and a reliable figure for how often children outgrow it is not established in the research the way it is for milk or egg (Rance 2003). A falling mustard-specific IgE over time is the encouraging direction, confirmed by a supervised challenge, never by trying mustard at home on a guess (see Prognosis and outgrowing).

Is there a treatment for mustard allergy?

No. There is no approved mustard treatment and no established mustard oral immunotherapy or sublingual immunotherapy in standard care. Management is strict avoidance of both kinds of mustard, a written action plan, and the epinephrine your allergist prescribes (see Treatment options).

Voices: living with mustard allergy

Attributed lived experience, kept separate from the clinical facts above. This is an individual account, not medical guidance, and it carries no clinical claim the page above has not already made.

A Canadian allergy mother whose son is allergic to mustard described how, before mustard was added to Canada’s priority-allergen list, she had to avoid a wide range of everyday foods on his behalf, from soups to potato chips to prepared meats, because mustard could be hidden behind a vague term like “spice”. Of the labeling requirement she said it makes their lives easier in terms of labeling.

Source: Julie Mototsune, in Allergic Living, 2010. One parent’s experience, not medical guidance.

References and medical review

This page is pending independent medical review; the note at the top of the page applies until a reviewer is assigned. The references below resolve every in-body citation. The one cleared cross-reaction (yellow and oriental mustard travel together) is drawn from the project’s verified cross-reactivity floor; the hidden-source list, the rapeseed and mugwort-mustard pollen pictures, and the regulatory facts are sourced from the mustard research record still pending final review. Where a reference has no resolvable stable identifier, it is listed bibliographically without a link rather than with an unverified URL.

1. Monsalve RI, et al. The mustard 2S albumins Sin a 1 and Bra j 1 as the dominant heat- and digestion-stable mustard allergens (the component basis of systemic reactivity). 2001.
2. Rance F, et al. Mustard allergy in children (the French pediatric mustard-allergy proportion, the early onset, the hidden-allergen-in-the-infant-diet framing, and the persistence picture). Allergy. 2003. https://doi.org/10.1034/j.1398-9995.2003.00109.x
3. EAACI Molecular Allergology User’s Guide (the diagnostic pathway, component-resolved phenotype discrimination, and the supervised oral food challenge as the reference standard). https://doi.org/10.1111/pai.13854
4. Togias A, Cooper SF, Acebal ML, et al. Addendum guidelines for the prevention of peanut allergy in the United States (NIAID-sponsored expert panel; cited for the avoidance-plus-action-plan baseline and the anaphylaxis-escalation default). J Allergy Clin Immunol. 2017;139(1):29-44. https://doi.org/10.1016/j.jaci.2016.10.010
5. Regulation (EU) No 1169/2011, Annex II (mandatory EU mustard declaration; the UK retains the same requirement under the assimilated rules). https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32011R1169
6. Health Canada. Enhanced labelling for food allergen and gluten sources and added sulphites (mustard a priority allergen; SOR/2011-28). https://gazette.gc.ca/rp-pr/p2/2011/2011-02-16/html/sor-dors28-eng.html
7. Food Allergen Labeling and Consumer Protection Act of 2004 (FALCPA), as amended by the FASTER Act of 2021 (which added sesame as the ninth major allergen); mustard is not a US major allergen. https://www.fda.gov/food/food-allergensgluten-free-guidance-documents-regulatory-information/food-allergen-labeling-and-consumer-protection-act-2004-falcpa
8. Cross-reactivity claims above resolve to the project’s verified floor where a floor record exists: the cleared, avoidance-direction fact that yellow (Sinapis alba) and oriental (Brassica juncea) mustard cross-react and are avoided together. The rapeseed and canola crossing and the mugwort-mustard pollen picture carry no cleared reassurance and are sourced from the mustard research record; the hidden-source list carries no cleared floor record and is rendered from the same record; there is no cleared refined-oil reassurance for mustard, so the cold-pressed mustard-oil caution is rendered conservatively.