Recently, the criteria for the diagnosis of a substance use disorder were revised by the publication of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, also known as the DSM-V. If you want to know whether you or a loved one is suffering from a substance use disorder, check the following criteria, and refer to the scale.
The presence of 2-3 criteria = Mild
The presence of 4-5 criteria = Moderate
The presence of 6+ criteria = Severe