Malcolm grew up in a home with little nurturing, and is ofte…

Malcolm grew up in a home with little nurturing, and is often unfeeling with others. He becomes quickly bored and is described by his friends as a thrill seeker who often breaks the rules. Things quickly reel out of control at parties where he overindulges in alcohol and recreational drugs. If a mental health professional were to look at this case, which of the following would be the most plausible diagnosis?