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. It often involves cravings, tolerance, and withdrawal symptoms, making it difficult for individuals to stop using substances despite negative consequences. SUD can affect anyone, regardless of age, gender, or background. Treatment options include therapy, medication, and support groups, which aim to help individuals manage their addiction and improve their overall well-being. Early intervention and support are crucial for recovery and long-term success.