Halloween has two big allergy risks. The first is latex, found in many rubber masks, costume pieces and party balloons. The second is food: a Canadian study found children had higher rates of anaphylaxis to peanuts and unknown nuts around Halloween than during the rest of the year. Both can be managed with a little planning.
This guide covers where latex hides in costumes and decorations, latex allergy symptoms, and how to keep trick-or-treating safe for kids with food allergies. For more, see our skin allergy and food allergy guides.
Jump to: Quick answer · Where latex hides · Latex allergy symptoms · Latex-safe costumes · Candy and food allergies · If a reaction happens · FAQ
Quick answer
- Latex shows up in rubber masks, costume prosthetics and accessories, and balloons, which ACAAI lists among latex-containing products.
- Who’s at risk: people with many surgeries (such as children with spina bifida), health care workers, rubber industry workers and people with other allergies (ACAAI).
- Reactions range from skin itching and redness to hives, asthma symptoms and anaphylaxis.
- Halloween is a higher-risk time for nut reactions in children, according to a Canadian study.
- Check candy labels, especially fun-size versions, and carry epinephrine if prescribed.
Where latex hides at Halloween
The American College of Allergy, Asthma and Immunology (ACAAI) lists everyday products that may contain latex, including balloons, rubber toys, handbags, athletic shoes, tools and underwear waistbands. At Halloween, watch for:
| Item | What to check |
|---|---|
| Rubber masks | Many full-head masks are made of latex rubber; look for fabric, foam or plastic alternatives |
| Costume prosthetics | Fake noses, ears, wounds and scars are often latex; check the label for “latex-free” |
| Costume adhesives and makeup | Some special-effects products contain liquid latex; read ingredients |
| Balloons | Latex balloons are common at parties; ask hosts to use foil (Mylar) balloons |
| Rubber props and toys | Rubber spiders, bats and squishy toys may contain latex |
| Gloves | Costume or cleanup gloves may be latex; choose nitrile or vinyl |
When in doubt, ask the seller or choose products clearly labeled latex-free.
Latex allergy symptoms
According to ACAAI, latex can cause:
- Immediate allergic reactions: hives, itching, a stuffy or runny nose, asthma symptoms and, in severe cases, anaphylaxis.
- Immediate skin reactions: itching, redness and swelling where latex touched the skin.
- Allergic contact dermatitis: a delayed rash, often eczema-like with blisters, starting 1 to 3 days after contact with chemicals used in rubber products.
People with latex allergy may also react to certain foods, including apple, avocado, banana, carrot, celery, chestnut, kiwi, melons, papaya, raw potato and tomato. For more on latex allergy and how hospitals handle it, see Johns Hopkins and latex-safe hospitals.
Choosing latex-safe costumes
- Pick fabric-based costumes and masks made of cloth, foam or plastic.
- Read labels on prosthetics, adhesives and special-effects makeup for latex.
- Test new makeup on a small patch of skin a few days before Halloween, and remove it fully at night. See fragrance allergy for other cosmetic triggers.
- Tell party hosts about the allergy so they can skip latex balloons.
- Wear medical alert ID if you’ve had a severe reaction, as ACAAI advises.
Candy and food allergies
A 2020 study in the Canadian Medical Association Journal looked at 1,390 children seen in emergency departments for anaphylaxis. Rates of anaphylaxis to unknown nuts and peanuts were higher around Halloween and Easter than during the rest of the year, and the risk was higher in children aged 6 and older.
- Check every label. Fun-size and seasonal candy may have different ingredients than full-size versions.
- Wait to eat until home, so an adult can sort candy first.
- Trade unsafe candy for safe treats or non-food prizes.
- Know the major allergens: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame must be declared on U.S. packaged food labels.
For other holidays, see holiday allergies and Thanksgiving with a food-allergic child.
If a reaction happens
ACAAI recommends that people with severe latex allergy carry an epinephrine auto-injector. For food allergies, ACAAI advises carrying two auto-injectors and using epinephrine first in a severe reaction, since antihistamines are not a substitute. After using epinephrine, get emergency care.
This guide is general information, not medical advice. Read our medical disclaimer.
Frequently asked questions
Do Halloween masks contain latex?
Many rubber masks and costume prosthetics are made of latex. Choose fabric, foam or plastic masks, or products labeled latex-free.
Are balloons a problem for latex allergy?
Yes. ACAAI lists balloons among products that may contain latex. Foil balloons are an alternative.
What are the signs of a latex allergy?
Itching, redness and swelling where latex touched the skin, hives, a runny nose, asthma symptoms and, in severe cases, anaphylaxis. A delayed rash 1 to 3 days later can also occur.
Is Halloween risky for kids with nut allergies?
A Canadian study found higher rates of anaphylaxis to peanuts and unknown nuts around Halloween. Check candy labels and sort treats before eating.
What foods cross-react with latex?
ACAAI lists apple, avocado, banana, carrot, celery, chestnut, kiwi, melons, papaya, raw potato and tomato.
Sources
- American College of Allergy, Asthma and Immunology. Latex allergy.
- Leung M, Clarke AE, Gabrielli S, et al. Risk of peanut- and tree-nut-induced anaphylaxis during Halloween, Easter and other cultural holidays in Canadian children. CMAJ. 2020;192(38):E1084-E1092.
- American College of Allergy, Asthma and Immunology. Epinephrine auto-injector.
- U.S. Food and Drug Administration. Food allergies: what you need to know.
Last reviewed: October 21, 2026.
-
Why Hospitals Ban Latex: The Johns Hopkins Latex-Safe Policy and What It Means for Patients
-
Thanksgiving With a Food-Allergic Child: A Practical Safety Plan
-
SLIT for Milk Allergy: What Sublingual Immunotherapy Can and Can’t Do
-
Chemicals in Crib Mattresses: What Parents Should Know About VOCs and Allergies
-
Is Fermented Soy Less Allergenic? What the Lab Research Shows
-
Hair Dye Allergy: Symptoms, the PPD Connection and How to Color Safely