Answer:
Obsessive-Compulsive Disorder is illustrated by the case described.
Step-by-step explanation:
Among the symptoms of obsessive-compulsive disorder is the fear of killing someone. It is common for people who present that symptom to have intrusive thoughts concerning violence, developing a fear of acting on an impulse and truly harm others. However, it is not common for them to actually perform the actions. As a matter of fact, just the thought of it makes them feel guilty. This 13-year-old boy whose case is described in the question displays that symptom of obsessive-compulsive disorder.