After a horrible event, a person may not feel or behave normally for a significant amount of time. He or she may feel depressed, nervous or fearful -- may cry, take dangerous risks or not get along with friends and family. There are many possible symptoms and classifications of this problem. "Post traumatic stress disorder" is one such classification.
A dog bite victim might suffer from post traumatic stress disorder for months after the attack. It is unfair to allow this suffering to continue without proper treatment from a mental health practitioner (see treatment for emotional and social injuries).