İnsignificant one who lives off others; a moocher
To see a parasite in your dream suggests that you are feeling physically drained. It is also an indication that you are taking without giving back. You are becoming too dependent on others.
1. An abusive, draining relationship or situation.
2. Dependence to the point of taking advantage.
Dreams of parasites represent that you are letting little things eat at you. This dream also may be showing you that something or someone (maybe you) in your waking state is draining your energy, eating away at your -esteem, and draining your energy. See Vampire.