Pseudoallergy

A pseudoallergy is a condition named for its similar presentation to a true allergy, though due to different causes.^[1]

It may be due to alterations in the metabolism of histamine.^[2]

It can be the cause of some forms of food intolerance.^[3]

References

↑ Arnaldo Cantani (2008). Pediatric allergy, asthma and immunology. Springer. pp. 697–. ISBN 978-3-540-20768-9. Retrieved 21 June 2010.
↑ Reese I, Zuberbier T, Bunselmeyer B, et al. (January 2009). "Diagnostic approach for suspected pseudoallergic reaction to food ingredients". J Dtsch Dermatol Ges. 7 (1): 70–7. doi:10.1111/j.1610-0387.2008.06894.x. PMID 19054425.
↑ Zopf Y, Baenkler HW, Silbermann A, Hahn EG, Raithel M (May 2009). "The differential diagnosis of food intolerance". Dtsch Arztebl Int. 106 (21): 359–69; quiz 369–70; 4 p following 370. doi:10.3238/arztebl.2009.0359. PMC 2695393. PMID 19547751.

Foreign	Atopic eczema Allergic urticaria Allergic rhinitis (Hay fever) Allergic asthma Anaphylaxis Food allergy common allergies include: Milk Egg Peanut Tree nut Seafood Soy Wheat Penicillin allergy

Autoimmune	Eosinophilic esophagitis

Foreign

Autoimmune

Cytotoxic	Autoimmune hemolytic anemia Immune thrombocytopenic purpura Bullous pemphigoid Pemphigus vulgaris Rheumatic fever Goodpasture's syndrome Guillain–Barré syndrome

"Type V"/receptor	Graves' disease Myasthenia gravis Pernicious anemia

Foreign	Henoch–Schönlein purpura Hypersensitivity vasculitis Reactive arthritis Farmer's lung Post-streptococcal glomerulonephritis Serum sickness Arthus reaction

Autoimmune	Systemic lupus erythematosus Subacute bacterial endocarditis Rheumatoid arthritis

Foreign	Allergic contact dermatitis Mantoux test

Autoimmune	Diabetes mellitus type 1 Hashimoto's thyroiditis Multiple sclerosis Coeliac disease Giant-cell arteritis Postorgasmic illness syndrome Reactive arthritis

GVHD	Transfusion-associated graft versus host disease

Unknown/
multiple

Foreign	Hypersensitivity pneumonitis Allergic bronchopulmonary aspergillosis Transplant rejection Latex allergy (I+IV)

Autoimmune	Sjögren's syndrome Autoimmune hepatitis Autoimmune polyendocrine syndrome APS1 APS2 Autoimmune adrenalitis Systemic autoimmune disease

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