Opioid use disorder is a medical condition characterized by a person's inability to control their use of opioids, which are powerful pain-relieving medications. This disorder can develop after using prescription opioids, such as morphine or oxycodone, or illegal drugs like heroin. Symptoms may include cravings, withdrawal symptoms, and continued use despite negative consequences. People with opioid use disorder may experience significant challenges in their daily lives, including problems at work, in relationships, and with their health. Treatment options are available, including medication-assisted treatment and counseling, which can help individuals manage their condition and work towards recovery.