Catherine Monteleone sometimes jokes that her patients are among the few who aren’t happy when their test results are negative. She’s an allergist-immunologist at Rutgers Robert Wood Johnson Medical School, and people with allergies want to know what’s causing their symptoms — what, precisely, they’re allergic to — so they can take steps to lessen the misery. “It’s like a puzzle,” she said of treating a person suffering from allergies. Being able to figure out what’s causing an allergy and fix it is gratifying, she said. To read the full story.