Dr. Vivian Hernandez-Trujillo practices Pediatric Allergy Medicine in Miami Lakes, FL. A pediatric allergist/immunologist finds and treats allergies and immune system problems that child patients suffer from. Dr. Hernandez-Trujillo treats the reactions caused by pet dander, pollen, dust, mold spores, insect stings, food, and medications; those reactions include asthma, hay fever, hives, eczema, or a very severe and unusual reaction called anaphylaxis.