Leeches are parasites that drain your energy and your resources. They are literally “blood suckers” and what they represent from your life is up to you to determine. Think about all of the draining things around you or inside of you. Usually dreams are designed to make us more aware of ourselves. Thus, the leeches may represent your own habits, thoughts, and negative emotions rather than someone in your environment. In the old days (and maybe in some remote parts of the world this is still happening) leeches were used for medical purposes. They were harvested and used in case of infection or other physical condition where by poisonous or harmful substance needed to be removed form the body. Maybe the leeches in your dream are there to suck out all of the negativity that you acquire throughout your day or in a particular situation.