Case Study: Raw Carrot Allergy Caused by Oral Allergy Syndrome

Patient Profile

A 34-year-old patient experienced consistent itching and tingling in the lips and throat after eating raw carrots but reported no symptoms when consuming cooked carrots. The patient also had a history of seasonal allergic rhinitis, especially during spring.

Symptoms

  • Tingling sensation in lips and tongue

  • Scratchy throat lasting 15–30 minutes

  • Mild lip swelling

  • No breathing difficulty or systemic reactions

Evaluation

An allergy consultation at Enticare included:

  • Detailed dietary history

  • Skin prick testing for birch pollen

  • Blood testing for allergen-specific IgE

Results confirmed birch pollen sensitivity, consistent with oral allergy syndrome.

Treatment Plan

  • Avoidance of raw carrots

  • Continued consumption of cooked carrots

  • Daily non-sedating antihistamine during pollen season

  • Education on cross-reactive foods

Outcome

Symptoms resolved completely with dietary adjustments. The patient reported improved confidence in managing food choices and seasonal allergies.

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