To dream of addiction represents an obsessive need or a lack of self-control. You have surrendered your will power. You might have habits that you are unable to give up.
To dream of your mother being addicted to drugs represents feelings about your sense of intuition or ability to make long-term decisions being overpowered by bad habits or strong desire. Difficulty making sound decisions because you like something or love someone too much. Sexual attraction that overrides your good judgement.
Consider the substance that you are addicted to for additional meaning.