Hypersensitivity to Hymenoptera Stings

Abstract
A 29-year-old man reports that he has been stung by a bee or wasp outside his door, where he had previously noted a nest. Skin itching, diffuse hives, swelling of his arms and legs, tightness in his throat, dizziness, and difficulty talking developed immediately, and he was taken to a local clinic where he received epinephrine and antihistamines. He was observed for two hours, and all symptoms resolved. How should his case be managed subsequently?