Food Allergy Uaar

8/17/2019 Food Allergy Uaar

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FOOD ALLERGY


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Defnition

• A ood allergy occurs when the body’s iune syste sees acertain ood as harul and reacts by causing sy!tos" #han allergic reaction"

• Foods that cause allergic reactions are allergens"

• E$en a tiny aount o the allergy%causing ood can trigger siand sy!tos such as digesti$e !robles

• &t's easy to conuse a ood allergy with a uch ore coonreaction (nown as ood intolerance

• ood intolerance is a less serious condition that does not in$oiune syste"


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)ategories o ood Allergie

#here are two categories o ood allergy

1.Immunoglobulin E (IgE) mediated:*y!tos result the body’s iune syste a(ing antibodies called&unoglobulin E +&gE, antibodies" #hese &gE antibodies rwith a certain ood"

•#he &gE ediated ood allergies ost coon in inants achildren are eggs- il(- !eanuts- tree nuts- soy and wheat"

•#he allergic reaction can in$ol$e the s(in- outh- eyes- lunheart- gut and brain" *oe o the sy!tos can include.


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*(in rash- itching- hi$es

*welling o the li!s- tongue or throat

*hortness o breath- trouble breathing- whee/ing

*toach !ain- $oiting- diarrheaFeeling li(e soething awul is about to ha!!en

• 0ild and se$ere sy!tos can lead to a serious allereaction called ana!hyla1is


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• #his reaction usually in$ol$es ore than one !art o body and can get worse ast" Ana!hyla1is ust receitreatent right away because it can cause death"

• #reat ana!hyla1is with e!ine!hrine" #his edicine isand coes in an easy%to%use de$ice called an auto%in2

You can’t rely on antihistaines to treat ana!hyla1is

• 3a$ing an &gE ediated allergy to one ood can eaindi$idual is allergic to siilar oods"


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Ana!hyla1is 4 3i$es


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• i an indi$idual is allergic to cow’s il(- he or she also be allergic to goat’s and shee!’s il("

• #he reaction between di5erent oods is called cross%reacti$ity" #his ha!!ens when !roteins in one ood a

siilar to the !roteins in another ood"


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Type 1 involves IgE antibodies, which attach to mucus membranes which release

histamine. Allergic reactions usually occur within 1 to 60 minutes. They cause

classic symptoms, such as asthma, rhinitis, !running nose", ec#ema, hives, red

chee$s, etc. It is the most dangerous, and can be li%e threatening.

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2. Non IgE mediated food Allergy:0ost sy!tos o non-Igmediated food allergies in$ol$e the digesti$e tract" *y!tay be $oiting and diarrhea

• #he sy!tos can ta(e longer to de$elo! and ay last long&gE ediated allergy sy!tos

• 6hen an allergic reaction occurs with this ty!e o allergy-e!ine!hrine is usually not needed

• #he best way to treat these allergies is to stay away ro ththat causes the reaction


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The majority of food allergies are triggered by erta!roteins in:

*hellfsh- such as shri!- lobster and crab

7eanuts

#ree nuts- such as walnuts

Fish

Eggs


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In hildren" food allergies are ommonly triggered b!roteins in:

Eggs

0il(

7eanuts

#ree nuts

6heat


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Diagnosis O Food Allergy

• #here's no standard test used to confr or rule out a ood alle

#esri!tion of sym!toms

• 8e !re!ared to tell your doctor a history o your sy!tos 9 woods- and how uch- see to cause !robles

$hysial E%amination

• A careul e1a can oten identiy or e1clude other edical !ro

&ood #iary

• doctor ay as( you to (ee! a ood diary o your eating habits-sy!tos and edications to !in!oint the !roble"


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)ont:

'in Test:

• A s(in !ric( test can deterine your reaction to a !articular ood

Elimination #iet

• !atient ay be as(ed to eliinate sus!ect oods or a wee( or two aadd the ood ites bac( into your diet one at a tie" #his !rocess can

lin( sy!tos to s!ecifc oods" 3owe$er- this isn't a ool !roo etholood Test

A blood test can easure your iune syste's res!onse to !articulaby chec(ing the aount o allergy%ty!e antibodies in your bloodstrea(nown as iunoglobulin E +&gE, antibodies"


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*ral &ood +hallenge Test

•During this test- done in the doctor's o5ice- you'll be sall but increasing aounts o the sus!ect ood" & yodon't ha$e a reaction during this test


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#reatent

• #he only way to a$oid an allergic reaction is to a$oid toods that cause signs and sy!tos

• antihistaines ay hel! reduce sy!tos"

• ay need an eergency in2ection o e!ine!hrine

• Lie style and hoe reedies

• 7robiotics ;Li$e icroorganiss which when adinisin ade


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Food &ntolerance

• 0ore coon than allergies• Food !oisoning• 3istaine to1icity +cheese- wine- fsh,• Lactose intolerance• Food additi$es +0*G,• Gluten intolerance +sall intestine,• )orn !roducts• #rue allergy > a$oid ood +iune syste,• &ntolerance > sall aount is o( +digesti$e syste,


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)eliac Disease4 )oeliac Disea

• )eliac disease can a5ect genetically !redis!osed !eo!le o all ageoten begins in iddle inancy

• *y!tos include chronic diarrhea- weight loss and atigue- but icases the disorder can be asy!toatic +no sy!tos,"

• )eliac disease is caused by a reaction to gliadin % a gluten !rotein

in wheat- barley- rye- and soeties oats• he in?aation and destruction o the inner lining o the sall in

in celiac disease is caused by an allergic reaction to gluten in the

• #his chronic digesti$e disorder leads to the alabsor!tion o ineand nutrients"


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)auses o ood intolerance

Food intolerance ay be caused by.

• Enyme deienies

Lactose intolerance

• &ood additi/es

Artifcial coloring

Artifcial ?a$oring

!reser$ati$es

• #igesti/e diseases


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#reatent o ood intoleran

• @o treatent is a$ailable but to a$oid the ood

• Alternate diet !lan or indi$idual

Food Allergy Uaar

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