Substance use disorder (SUD) is a medical condition characterized by an individual's inability to control their use of drugs or alcohol, leading to significant impairment or distress. People with SUD may continue to use substances despite facing negative consequences, such as health issues, relationship problems, or difficulties at work. The disorder can affect anyone, regardless of age, gender, or background. Treatment options for SUD often include therapy, support groups, and sometimes medication to help manage cravings and withdrawal symptoms. Early intervention can improve outcomes and support recovery.