CASE 2:
A 17 year old male comes to your office in August because he is concerned that he has a food allergy. After eating bananas, he develops pruritus of his lips and tongue without edema. He has no systemic symptoms after eating bananas. The symptoms resolve with no treatment. He has no history of eczema or asthma. He does have seasonal allergic rhinitis in the late summer for which he takes loratadine with good response.
What further testing is needed?