Do drug addicts also tend to be self-harmers?

Some are: Those who self harm may have other addictions such as drugs, eating disorders, etc. Drug addiction, in turn, does have a higher incidence of self harm. However, not all, or even the majority of drug addicts, are self harmers. Certain substance abuse has a higher rate of self harm. These are amphetamines, benzodiazepines (probably withdrawal) problem drinking is common among people who self harm.