In DSM-III, this category is called Other, Mixed, or Unspecified Substance Abuse
Other Substance Abuse should be recorded if a substance abused cannot be classified in any of the categories, e.g., glue (inhalants), amylnitrite.
Mixed Substance Abuse should be noted when the substances abused are from more than one nonalcoholic substance category, e.g., amphetamines and barbiturates. This category should be used only when the specific substances cannot be identified or when the abuse involves so many substances that the clinician prefers to indicate a combination of substances rather than list each specific substance.
Unspecified Substance Abuse should be recorded when a substance abused is unknown.
A. A maladaptive pattern of substance use leading to clinically significant impairment or distress, as manifested by one (or more) of the following, occurring within a 12-month period:
- recurrent substance use resulting in a failure to fulfill major role obligations at work, school, or home (e.g., repeated absences or poor work performance related to substance use; substance-related absences, suspensions, or expulsions from school; neglect of children or household)
- recurrent substance use in situations in which it is physically hazardous (e.g., driving an automobile or operating a machine when impaired by substance use)
- recurrent substance-related legal problems (e.g., arrests for substance-related disorderly conduct)
- continued substance use despite having persistent or recurrent social or interpersonal problems caused or exacerbated by the effects of the substance (e.g., arguments with spouse about consequences of intoxication, physical fights)
B. The symptoms have never met the criteria for Substance Dependence for this class of substance.