Assessment and Treatment of Substance Use DisordersAbout This Hardback Substance use disorder refers to the condition of using one or more substances which cause impairment or distress. It is also known as drug use disorder. These substances include alcohol, caffeine, cannabis, hallucinogens, such as inhalants, opioids, sedatives, hypnotics, stimulants, tobacco, etc. Some of the mental, behavioral and physical symptoms of the disorder are loss of control, strain in life, tremors, sweating, etc. The