Fear Of The Dark

When I am in the dark, especially when I am in a room with only one escape door, I imagine things that seem to be coming from the darkness and are trying to reach out at me and pull me to them. I have had to move my bed to the farthest corner from my door in my bedroom, because I often imagine a creature opening the door and eating me whole/mutilating me beyond recognition/trapping me in some weird dark other dimension. I will get panic attacks so bad that I will be frozen, or "glued" to the inner corner of my bed that is against the wall, and unable to move whatsoever until it is light again. I know this is not normal, and wondering what I can do? Night lights do not help, for the shadows they cast frighten me as well, and I am unable to sleep with lights on. The panic attacks do not happen every night, although I am still afraid every night. They get so bad that I get dizzy and end up just passing out until the morning or sometimes afternoon.