Final answer:
SUDs commonly co-occur with mental health issues, with anxiety disorders being most prevalent, followed by mood disorders such as depression and bipolar disorder.
Step-by-step explanation:
Substance Use Disorders (SUD) are frequently accompanied by various mental health conditions, two of the most common being anxiety disorders and mood disorders. Anxiety disorders are the most prevalent mental health challenges in the United States, affecting nearly 18 percent of adults annually and 28 percent over their lifetimes. These disorders include conditions such as obsessive-compulsive disorder (OCD), panic disorders, posttraumatic stress disorder (PTSD), and various phobias.
Following anxiety disorders, the second most common mental disorders are mood disorders, affecting approximately 10 percent of U.S. adults each year and 21 percent at some point in their lives. Among mood disorders, major examples include depression and dysthymic disorder, as well as bipolar disorder, which is characterized by extreme fluctuations in mood and energy levels.