我們將在本文中介紹過敏症的定義，過敏原的種類，過敏的徵兆、症狀和 ... 吞咽食物時口腔和喉嚨發癢; 起皮疹，例如蕁麻疹 （皮膚上凸起並發癢 ...Skiptomaincontentsharethispagemore_horizTweetShareDownload AllergiesAAllergiesAllergiesEnglishAllergyChild(0-12years);Teen(13-18years)BodyImmunesystemConditionsanddiseasesCaregiversAdult(19+)Cough;Eyediscomfortandredness;Runnynose;Rash;Wheezing2019-04-01T04:00:00Z7.7000000000000062.90000000000001328.00000000000Health(A-Z)-ConditionsHealthA-Z
Thispageexplainswhatallergiesare,typesofallergens,thesignsandsymptomsofallergies,andalsothecauses.Italsogivesexamplesofcommonallergiesandwhattodoifyourchildhasanallergicreaction.
Whatisanallergy?
Theimmunesystemprotectsusbyattackingharmfulsubstancessuchasvirusesandbacteria.Anallergyistheimmunesystem’sresponsetoasubstancecalledanallergen.
Theallergenisnotharmfulformostpeople.However,whenachildhasanallergy,theimmunesystemtreatstheallergenasaninvaderandover-reactstoit.Thisresultsinsymptomsfrommilddiscomforttoseveredistress.
Allergicdisorders,includingfoodallergies,arecommoninchildhood.Manychildrenwithallergiesalsohaveasthma.