Yes demons can cause nightmares... I have experienced that.
The use of an Ouija board can often just be a random diversion in which nothing happens. But sometimes it can open up the door to the demonic. This is since in using the board a person in your house actually called upon a spirit to converse with. The spirit could claim to be an angel, a deceased relative or the like, but do not be fooled. What the Ouija board connects one with (if anything) is a demon.
One person on Yahoo Answers wrote, “After I played that Ouija ,I never wanted to do it again...I remember asking it when I was going to die and it said "56"...and I asked it how I was going to die and it said "sick".. Of course I wasn't moving the thing, and my friend said she wasn't moving it....It scared me shitless to be honest.. I just hope what it said isn't true…
Another said, “My sister received one for her birthday and used it regularly. We then noticed a pattern that every time she or I used it we wear hurt pretty bad, not broken bones, but serious cuts. After finally deciding to get rid of it, and throwing it in the trash I told it to ‘burn in hell’ later that day I had to go to the emergency room with 1st, 2nd, & 3rd degree burns to my face from a gasoline accident.”
And another on Yahoo Answers wrote, “Once my aunt and grandpa were playing with one and it said they would die on a bridge close to my aunt's house. Another time when my youngest uncle was in fifth grade the teacher brought an Ouija board out. He played with it and when he got home his mom told him to ask it if it believes in Jesus Christ as the Savior. He did and the spinny thing flew off the table and they never saw it again.”
Someone else wrote, “I played with an online Ouija Board for about 2 minutes about a month ago. I communicated with something that made me feel so uncomfortable I had to leave the Ouija Board in an instant. Since then my computer has been broken. One second my computer was working then it started turning on and off by itself, then stopped all of the sudden. I also woke up with and unexplained bruise on my right hip this morning that doesn't hurt. I was so shocked when I saw it and I didn't know where it came from. Ever since then things have gotten real strange. I feel like I'm always being followed. Everywhere I go I don't feel like I'm alone, and it makes me feel very uneasy. I hear noises that really don't make any sense. Random bumps, footsteps, knocks, and quiet voices are heard. I feel as if someone touches me all the sudden, and my body feels as if something else is controlling it at times. Things are moved around unknowingly. Things will disappear and then reappear, or weird items are often found in weird locations. All of this has made me feel extremely paranoid, anxious, and scared. Also, my stomach has been consistently aching on and off, and my hunger level is significantly lower. Night time is the worst for the activity and iI experience some indescribable sensations, sounds, and overall it's just terrifying.. Also dogs seem to be hostile and bark and act very territorial as of late. I 'be never experienced anything like this,”
Someone else shared, “A good friend of mine was tormented by a spirit her brother had let loose with this. It even followed her to college. Do not use it. The stronger spirits will come through and they are usually the bad ones.”
You can do your own search on Yahoo Answers for “Ouija beard experiences” and the like and you will see the stories are never good.
The only real way to be freed from oppression from the Ouija board is through Jesus Christ. Only in him and through him is there victory over demonic spirits. Those that have experienced the forces of darkness and see that the spiritual realm is very real need to now turn to the good to obtain freedom. Have a look at the links below (mostly videos) and see what you think. Your house should be prayed for and you need Jesus in your life for protection from spirits, and forgiveness and new life for you.
Ouija Board story
http://www.youtube.com/watch?v=fDJZGRoJTN0
Ouija board leads to demonic bondage
http://www.youtube.com/watch?v=XvDeysgjOe8
Mel Bond – Hell and Demons
http://www.youtube.com/watch?v=M0d2fVm4WYo