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Food Allergy

Stanley Fineman, MD Reviewed 06/2019
 


BASICS

DESCRIPTION

  • Hypersensitivity reaction related to certain food exposures

  • System(s) affected: gastrointestinal (GI), hemic/lymphatic/immunologic, pulmonary, skin/exocrine

  • Synonym(s): allergic bowel ...

DIAGNOSIS

HISTORY AND PHYSICAL EXAM

  • Symptoms after food ingestion/exposure—usually within 30 minutes of ingestion but could be delayed 4 to 8 hours

  • Document a temporal relationship between symptoms and ...

TREATMENT

GENERAL MEASURES

  • Offending food avoidance is the most effective treatment.

  • Patients with severe food allergy should be meticulous about food avoidance. They should carry epinephrine for self-a...

ONGOING CARE

FOLLOW-UP RECOMMENDATIONS

Patient Monitoring

As needed 

DIET

  • As determined by tests and clinical evaluation

  • Strict avoidance of offending food

PATIENT EDUCATION

  • Dietary counseling is advised to ...

REFERENCES

1
Sicherer SH, Sampson HA. Food allergy: epidemiology, pathogenesis, diagnosis, and treatment. J Allergy Clin Immunol.  2014;133(2):291–308. [View Abstract on OvidMedline]
2
Burks AW, Tan...

ADDITIONAL READING

  • Du Toit G, Roberts G, Sayre PH, et al; for LEAP Study Team. Randomized trial of peanut consumption in infants at risk for peanut allergy. N Engl J Med.  2015;372(9):803–813. [V...

CODES

ICD10

  • T78.1XXA Oth adverse food reactions, not elsewhere classified, init

  • T78.00XA Anaphylactic reaction due to unspecified food, init encntr

  • L27.2 Dermatitis due to ingested food

  • L50.0 Allergic urt...

CLINICAL PEARLS

  • Up to 20% of children with peanut allergy may outgrow their sensitivity.

  • Oral itching following ingestion of fresh fruit may be a warning for anaphylaxis.

  • Maternal dietary restrictions d...

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