What psychological issue can result from narcotic abuse?

Narcotic abuse can lead to a range of psychological issues, with anxiety and violent behavior being significant consequences. Narcotics, especially when misused, can alter brain chemistry and emotional responses. Users may experience increased anxiety as their body becomes reliant on the substance, leading to withdrawal symptoms when not using. Additionally, the disinhibition effects of narcotics can lead individuals to act out violently or aggressively, impacting their behavior and interactions with others. This demonstrates how substance abuse can drastically affect mental health, resulting in anxiety and potential violent tendencies.

The other choices, while they might describe potential short-term effects that some users believe they experience, do not capture the broader, more concerning psychological consequences associated with narcotic abuse. Calmness and improvement in mood may be temporary effects of drug use, but they do not outweigh the risks of anxiety and violent behavior that can ensue from prolonged abuse. Increased focus is also not a typical outcome of narcotic use; in fact, many narcotics tend to impair cognitive function rather than enhance it. Therefore, the comprehensive psychological risks and behaviors stemming from narcotic abuse authenticate anxiety and violent behavior as the most accurate answer.