Jurate Cannara knew her daughter Laura was different when, as a toddler, she would stand out in the rain, her tiny hands outstretched toward the lightning. "Mama, I need energy," the little girl would tell her. As Laura Mikuseviciuje grew from toddler to child to teen to young woman, Cannara noticed that her daughter's eccentricities only increased with age. "I didn't understand my daughter," said Cannara, who lives in Verona, of her daughter's early expressions of intuition and odd, energetic behavior. According to some, Laura's tendencies are not odd at all; they even have a name. She and others like...