title: Is it allergy?
abstract: BACKGROUND
  'Allergy' refers to disorders involving IgE antibody. The cross linking of IgE molecules on mast cells by an allergen releases mediators that produce the typical allergic reaction.
  
  
  OBJECTIVE
  To distinguish allergies from other disorders, particularly those where mast cells are also involved.
  
  
  CONCLUSIONS
  Many non allergic processes can mimic allergy. A careful history and examination and discriminate use of investigations is important to make the distinction.
authors.affiliation: Ainslie Hospital Environmental Control Unit, Victoria.
authors.forename: C
authors.initials: C
authors.lastname: Little
mesh_terms: D000485:Allergens / Q000276:immunology; D003937:Diagnosis, Differential; D004804:Eosinophils / Q000276:immunology; D005512:Food Hypersensitivity / Q000150:complications; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis* / Q000276:immunology; D007958:Leukocyte Count; D008407:Mast Cells / Q000276:immunology; D011852:Radioallergosorbent Test; D012882:Skin Tests; D014581:Urticaria / Q000209:etiology
chemical_list: D000485:Allergens