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Oral Allergy Syndrome

Whitney A. Dunlap, MD, MS Reviewed 06/2019
 


BASICS

DESCRIPTION

  • Allergic symptom confined primarily to the oral cavity caused by ingestion of fresh plant foods is known as oral allergy syndrome (OAS).

  • OAS: where sensitization to a plant-derived pr...

DIAGNOSIS

HISTORY

  • Within 5 minutes of ingesting fresh fruits, vegetables, legumes, or tree nuts, patients experience sensation of itching, tingling, or numbness of the mucosa of the mouth, lips, tongue...

TREATMENT

GENERAL MEASURES

  • Avoidance of symptom-causing foods

  • For the majority of patients with fruit and vegetable-induced OAS, consumption of the food in a cooked form is safe and well tolerated.

  • Most ...

ONGOING CARE

PATIENT EDUCATION

  • The following conditions may increase the risk of anaphylaxis: (i) consumption of large amounts of the fresh food on an empty stomach, (ii) consumption of the fresh food ...

REFERENCES

1
Sicherer S. Clinical implications of cross-reactive food allergens. J Allergy Clin Immunol.  2001;108(6):881–890. [View Abstract on OvidMedline]
2
Pascal M, Muñoz-Cano R, Reina Z, et al...

ADDITIONAL READING

Adkinson NF, Bochner BS, Burks AW, et al. Middleton’s Allergy: Principles and Practice. 8th ed. Philadelphia, PA: Mosby Elsevier; 2014. [View Abstract on OvidMedline] 

CODES

ICD10

Z91.018 Allergy to other foods 

ICD9

V15.05 Allergy to other foods 

SNOMED

  • 432807008 Pollen-food allergy

  • 419452009 Allergic reaction to food

  • 414285001 Food allergy

CLINICAL PEARLS

  • Screen for and manage underlying associated allergic conditions.

  • Consider prescription for epinephrine autoinjector for those patients:

    • Who have had systemic symptoms with previous exp...

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