[erenyeager]

Medical definitions separate physician dependence from psychological dependence and generally a psych disorder is anything that causes social dysfunction including an addiction. So heroin has biologically addictive properties like it leads to withdrawal and tolerance, but also one can have a psychological dependence on heroin for example they associated it with a certain location they always use heroin In.

So the terms of addiction in the medical world are really more about where society draws the lines.