What is a key characteristic of Internet addiction disorder regarding its relationship with other disorders?

The key characteristic of Internet addiction disorder regarding its relationship with other disorders is its high comorbidity with other mental disorders. This means that individuals who exhibit behaviors associated with Internet addiction often also experience other psychological issues, such as anxiety, depression, or attention deficit hyperactivity disorder (ADHD). This co-occurrence can complicate treatment and requires a comprehensive assessment to address all underlying issues effectively.

Recognizing this comorbidity is crucial for effective intervention strategies. For example, treating the Internet addiction alone may not be sufficient if the individual is also dealing with untreated anxiety or depression, as these disorders can contribute to and exacerbate the addictive behaviors. Therefore, understanding the interconnectedness of these conditions is vital in both diagnosis and treatment planning for individuals with Internet addiction disorder.

The other statements do not accurately reflect the nuanced understanding of Internet addiction disorder. It is not always an independent condition, nor is it explicitly excluded from DSM classifications, and while it can be more common in adolescents, that's not its defining characteristic regarding comorbidity.