The term "opioid crisis" refers to a significant increase in opioid use, abuse and addiction. Opioids are a class of drugs that include prescription pain medications such as morphine, oxycodone, hydrocodone, methadone, fentanyl and heroin. The phrase "opioid crisis" is often used to describe the current epidemic in the United States where there has been a significant increase in opioid overdose deaths due to the misuse of prescription pain medications and illicit drugs like heroin. This crisis has led to increased efforts by government agencies, healthcare providers, law enforcement officials and community organizations to address this public health issue through prevention, education, treatment and law enforcement strategies.