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Onion Allergy or Intolerance

Onion Allergy or Intolerance



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An allergy to onion 'Allium cepa' is mostly to the Allicin protein. Symptoms will be worse when raw onion is consumed, when cooked there may less severe symptoms. Likely to also be allergic to garlic as they are part of the same plant family as are leeks chives and shallots. Can be referred to generally as an Allium allergy or intolerance. Some people have an onion intolerance where they are unable to digest raw onion and hence suffer from symptoms such as bloating, gas, nausea and abdominal cramps this is different from an onion allergy as there is no involvement from the immune system. There should be very little symptoms in those intolerant to garlic when digesting cooked onion. Diallyldisulfide is the allergen in Garlic which commonly causes skin irritation.

Triggers:
Raw onion and frequently linked to garlic, chives, shallots, leeks. These are present in many pre prepared foods such as soups, curries, stews, pies, and fast food.
Read all labels of food for signs of onion seasoning in the food. Where you're unsure of the ingredients it's always best to avoid foods, particularly if your last reaction was violent.

Symptoms:
An onion allergy rarely causes a full blown anaphylactic reaction and is usually associated with milder symptoms such as:

Itching and/or swelling of your lips, mouth, tongue and throat
Skin reactions such as swelling, itching and facial flushing
Diarrhoea, nausea, vomiting and bloating
Coughing, wheezing or shortness of breath
Runny nose, red and itchy eyes
Headache, migraine or blocked sinuses

Affects:
It is rare to have a food allergy to onion; intolerance is more common and affects adults more than children.

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Information

An allergy to onion 'Allium cepa' is mostly to the Allicin protein. Symptoms will be worse when raw onion is consumed, when cooked there may less severe
symptoms.

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