It appeared to be a Batman but it didn't have a title on the cover. Here's a synopsis: Batman was beating up a bunch of gangsters and just as he was finishing up he faints. He awakes to find himself in a hospital with his mask and gear off. He tries to leave but the doctors have him sedated and strapped to the bed. Just before they grab him he sees his reflection in the glass on the door and he doesn't recognize himself at all. The doctors tell him that he is an alcoholic and street person and that batman is a delusion he made up. They show him his batsuit and it's made of garbage bags and junk. At the end of the comic Batman gathers enough strength to break out of the straps and grabs his Batsuit and jumps out of the window. He fires his grapling line but just then everything starts to turn strange again and he turns into the street person and his grappling line turns into junk.
Would more details help?