Rocket Allergy
Riffelmann and Wenzel reported on the case of one person who had three reactions within three months after eating mixed salad. The symptoms were tongue swelling and angioedema of the lips. Tests for a sensitivity to lettuce were negative but were found to be positive to rocket.
[Eruca sativa, also known as rocket or arugula, is an edible annual plant. It is used as a leaf vegetable in salads.]
Riffelmann F, Wenzel M.
Tongue swelling and angioedema due to rocket (Eruca sativa)
Allergologie 2009;32(8):303-305.