While there is no single definition of bullying, it can be described as mean-spirited, disrespectful treatment designed to make people feel bad. Bullying can be found among all ages groups, take place once or go on for years, and often occurs online, explains family therapist Ellen deLara, PhD, an associate professor of social work at Syracuse University who researches this behavior. While some people can become stronger after being bullied, others face medical and emotional problems later on, a topic she details in a new book, “Bullying Scars: The Impact on Adult Life and Relationships.” Children who are different in any way are prime victims of bullies, says deLara, who stresses the importance of getting help for those who are bullied.