What is Allergen?
An '''allergen''' is something that causes allergies in [[humans]]. [[Dust]], [[pollen]] and pet [[dander]] are all common allergens. It is possible to be allergic to anything from [[chlorine]] to [[perfume]]. Food allergies are not as common, but some foods, like [[peanut]]s, [[Nut (fruit)|nuts]], [[seafood]] and [[shellfish]] cause serious allergies in lots of people. == Common allergens == Some common allergens could be: *Animal products **[[Fel d 1]] ([[cat allergy]]) **[[fur]] and [[dander]] **[[cockroach]] calyx **[[dust mite]] excretion *[[Drug allergy|Drugs]] **[[penicillin]] **[[sulfonamides]] **[[salicylate]]s (also found naturally in numerous [[fruit]]s) **[[local anaesthetic]]s *[[Food allergy|Foods]] **[[celery]] and [[celeriac]] <ref>{{citation| url=http://www.fasebj.org/cgi/content/full/17/12/1697 |author1=Bublin M |author2= Radauer C |author3= Wilson IBH |author4= Kraft D |author5= Scheiner O |author6= Breiteneder H |author7= Hoffmann-Sommergruber K |title= Cross-reactive N-glycans of Api g 5, a high molecular weight glycoprotein allergen from celery, are required for immunoglobulin E binding and activation of effector cells from allergic patients|journal= FASEB |date= 2003 |volume=17 |issue=12 |pages= 1697–1699|doi=10.1096/fj.02-0872fje |doi-access=free |pmid=12958180 |s2cid=22253513 }}</ref> **[[maize|corn]] or [[maize]] **[[egg allergy|eggs]] (typically [[Egg white|albumen]], the white) **[[fruit allergy|fruit]] ***[[pumpkin]] **[[legume]]s ***[[bean]]s ***[[pea]]s ***[[peanut allergy|peanuts]] ***[[soybean]]s **[[milk allergy|milk]] **[[seafood allergy|seafood]] **[[sesame]] **[[soy allergy|soy]] **[[nut allergy|tree nuts]] ***[[pecan]]s ***[[almond]]s **[[wheat allergy|wheat]] *[[Insect sting allergy|Insect stings]] **[[bee]] sting [[venom (poison)|venom]] **[[wasp]] sting venom **[[mosquito]] stings *Mold [[spore]]s *Other **[[latex allergy|latex]] **[[metal]] *Plant [[pollen]]s ([[hay fever]]) **[[grass]] — [[ryegrass]], [[timothy-grass]] **[[weed]]s — [[ragweed]], [[plantago]], [[nettle]