methods to cope with shellfish allergy?

Meals allergy symptoms have an effect on 3% to 4% of adults and, amongst them, shellfish allergy.

Extra frequent in maturity, this allergy can present itself all of the sudden and on the first signs an allergist needs to be consulted with the intention to appropriately diagnose and assess the state of affairs.

Having a shellfish allergy doesn’t imply being allergic to all shellfish. Nonetheless, when you’ve got an allergic response to shrimp, for instance, there’s a excessive likelihood that you’ll have the identical kind of response for those who eat lobster.

Get to know a bit of higher what any such meals allergy consists of and what precautions to take if you’re allergic to shellfish.

Shellfish allergy: what it’s and what precautions to take

Shellfish allergy is an antagonistic response of the immune system. It’s the commonest meals allergy in adults. There are lots of sorts of shellfish, which can belong to the group of crustaceans, molluscs, echinoderms, amongst others. Allergy to shrimp and different crustaceans is extra frequent, though allergic reactions to shellfish may happen.

One other kind of antagonistic reactions to shellfish that will happen are these of a poisonous nature, that’s, motivated by the shellfish being contaminated with microorganisms or toxins. These microorganisms may be micro organism or viruses and trigger reactions primarily of a gastrointestinal nature. In some circumstances, there might also be neurological and respiratory signs.

Shellfish allergy is especially resulting from tropomyosins, thermostable proteins which might be a part of the organism of those species. As they’re warmth resistant, they stand up to the excessive temperatures of cooking and are even transported within the steam of water, which is why some individuals could have an allergic response simply by coming into contact with this steam.

cross allergy symptoms

Usually, those that are allergic to at least one species of shellfish are usually allergic to all species in that class. For instance, roughly 75% of crustacean allergic sufferers react to a number of species of crustacean. Thus, simultaneous allergy to a number of crustaceans and molluscs is frequent.

Nonetheless, it’s attainable to be allergic solely to crustaceans; crustaceans and every kind of molluscs; crustaceans and bivalves; amongst different attainable mixtures. To grasp what your case is, the most effective factor is to speak to your allergist.

It also needs to be famous that the proteins that trigger allergy within the case of shellfish aren’t the identical as those who trigger allergy within the case of fish. Due to this fact, being allergic to shellfish has nothing to do with being allergic to fish, or vice versa.


Scientific manifestations that will point out an allergic response to shellfish normally happen shortly after consuming or inhaling the vapors from cooking shellfish.

  • It begins with pores and skin signs equivalent to itching, irritation, hives (blisters, purple spots or different spots) and edema.
  • Then there are digestive signs (stomach ache, nausea, vomiting, diarrhea) and/or respiratory signs (sneezing, watery rhinorrhea (“drop”), conjunctivitis and even cough, which might progress to hoarseness, problem in respiratory and swallowing).
  • Sufferers with bronchial asthma are at a better danger of getting extreme reactions.

Mainly, the indicators are just like another meals allergy.

When does it manifest?

There are frequent tales of people that have eaten shellfish all their lives and, at a sure level, as adults, they start to have allergic reactions to this meals. That is regular, as shellfish allergy comes late, being exactly extra frequent in maturity.

  • If you happen to suspect that you’ve had an allergic response to shellfish, it’s best to have an Immunoallergology session, in order that the specialist physician can affirm or reject the analysis.
  • After a primary session through which the affected person’s historical past is written, a pores and skin take a look at and blood assessments are carried out, that are important to certify the state of affairs.
  • In some circumstances, the oral provocation take a look at can also be carried out, through which the affected person is run small quantities of the meals to which he’s supposedly allergic.


Shellfish allergy has no treatment. However there are measures you may undertake in order that this dietary restriction shouldn’t be an issue in your each day life.

  • Excluding shellfish out of your food regimen won’t result in dietary deficits and is one of the simplest ways to forestall an allergic response.
  • If you happen to by chance eat shellfish and have an allergic response, it’s necessary to know what to do.
  • There are anti-allergy drugs (antihistamines or corticosteroids oral) that assist alleviate the signs and put an finish to the allergic response. Ask your allergist about methods to take them.
  • In conditions of extra extreme allergic reactions (anaphylaxis), sufferers needs to be accompanied by an emergency package with adrenaline for self-administration.

Seafood Classification Checklist


  • prawns / prawns
  • Lobster
  • crayfish
  • Do you perceive
  • Shoemaker
  • Crab
  • Spider crab
  • Lobster


bivalve molluscs

  • clam
  • Mussel
  • Cockle
  • scallop
  • conch
  • Oyster

cephalopod molluscs

Univalve molluscs or gastropods

  • limpet
  • Búzios
  • snail
  • snail