Which category of clinical disorders in Axis I of the DSM IV-TR includes Substance Use Disorders?

Substance Use Disorders are categorized specifically under Substance Related Disorders in Axis I of the DSM IV-TR. This classification encompasses a range of issues related to the misuse and dependence on substances, including alcohol, drugs, and other chemical substances. The focus here is on the patterns of use that lead to significant impairment or distress, emphasizing the behavioral, psychological, and physiological aspects of substance involvement.

Substance Related Disorders are distinct from other categories in Axis I, such as Personality Disorders, which deal with enduring patterns of behavior and inner experiences that deviate markedly from cultural expectations. Mood Disorders focus on disturbances in emotional regulation, such as depression or bipolar disorder, while Anxiety Disorders address excessive fear or anxiety that can impair daily functioning. Each of these categories covers different aspects of mental health challenges, making Substance Related Disorders a unique and essential subgroup addressing the impacts of substance use.