I'm 23, a year or two ago, in the dream, my right thumb ached. Eventually a big hornet clawed its way out of the bottom of my thumb. It was big, the size of one of those rare Cicada killer hornets. Big, like it's body is the width of your thumb. I woke up, and my thumb hurt so much....Dreams like this i always wake up and if I'm getting injured I wake up and my arm is hurting cuz I got sliced in my dream or some crazy insect hatched out of my skin. Can old wounds/scars cause certain kinds of dreams?