Substance use and substance use disorder differ by the frequency of use and the effect on a person’s life. Substance use disorder is a mental health condition. Substance use refers to using both legal ...

“When I use a word,” one of 19th century British author and mathematician Lewis Carroll’s characters once said, “it means just what I choose it to mean — neither more nor less.” Though he was a ...

Substance use disorder makes it hard to stop using substances even when they're harmful. Using the term "substance use disorder" helps separate the person from the treatable illness. Substance use ...

Addiction is an umbrella term that reflects qualities of substance use disorder, characterized by an inability to stop using a substance despite harmful consequences. However, addiction is not a ...

Substance use disorder is a silent epidemic ravaging our nation. It plagues 20 million Americans, costs taxpayers $820 billion annually and manifests in ways many of us overlook: untreated mental ...

Nearly 50 million people in the United States struggle with substance use disorders, and nearly three in four use more than one substance. People with polysubstance use disorders are more likely than ...

Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder, affecting 12%–13% of adolescents in the United States, according to some studies. The pattern of inattention, ...