As time goes on, it becomes more and more likely that dependence will develop. For most drugs and for alcohol, addiction comes in both physical and psychological forms. Physical addiction involves the changes that take place in the user’s body and mind in order to accommodate the frequent presence of a foreign substance. This aspect of addiction results in withdrawal symptoms when the intake of the drugs is significantly reduced or stops altogether. These symptoms are generally very unpleasant – so much so that the prospect of withdrawal can deter someone from trying to get clean – and they can even be dangerous.
Psychological addiction is the emotional aspect of dependence. It involves psychological cravings and a general feeling that the drug is needed for the individual to get through the day. The lack or anticipated lack of access to the substance will cause emotional distress, such as anxiety and depression.