One is a dream stimulated by the outside world: I just have a tingling and itching feeling in my left arm when I sleep, if something or an animal sticks to you, or that piece has an affected part. Sleep in pain.
If not, it may be a psychological dream: leeches feel like vampires, indicating that there is such a person around you who wants to squeeze you and take advantage of you (think about whether there is such a person). You're disgusted, but it's good to have someone to help you, but you're already black and blue, and then you deal with it yourself. Think about what happened recently.