Can someone help me find an old horror movie?
 

It's a horror movie i think from the 80's or 70's, i saw it on TV when i was a little kid, about 15 years ago; please forgive me if i remember something wrong, it was a lot of time ago!

I just remember some scenes:

Some people studying something strange in the dungeon of a castle or something like a cellar.

A girl scratching her back with a piece of metal hanging out of the wall, then slowly all the back becomes swollen / rotten, and she turns into some kind of monster.

something like a demon, or a blody, skinless rotting creature slowly turning all the people into monsters themselves, or something like that.

An ending scene where a character suddenly wakes up in his bed from a nightmare, turns his head and find himself staring at a horrible monster looking like a skinned corpse.

Hope this helps! :D

that sort of sounds like dario argentos demons, but there was no nightmare ending.... but thats the only thing i can think of.

Tnx for the help man, but it's not demons they were not in a cinema and i remember cleearly this girl scratching herself with something like a rusty hook coming out of the wall. The the scratch stated to swell and extended to all her back. I have some flashes like a person hiding in something like7 a confessional or maybe just behind something and she spied these monster/demon walking around and chasing him/her.

I also remember clearly the guy at the end of the movie.. it was a blond haired dude with a moustache, tipical 70-80's look, waking up covered in sweat and turning aside just to see the monster's face.

I think it was set in a castle or something like that... wait a moment i 've just remebered that it had something to do with time travel or maybe a dream sent to this guy by someone in the future to warn them about the danger and trying to save them.. yes i remember it clearly!!! It was something about a dream sent to people in the past or something like that! something like a message from the future

Sounds like Beyond Dream's Door but I could be wrong.

Well, you may have made up a few details, but it sounds like...

John Carpenter's Prince of Darkness

http://www.imdb.com/title/tt0093777/

I think you've got it, i now remember also the scene were the devil's arm outstretches from a mirror, and the whole dream transmission thing! You are a demi-god and you deserve worship!

many thanks! :D :D :D to everybody on this great forum! you really know a lot about horror movies