As a sufferer, for me this song could certainly be about a depersonalization or dissociative disorder, something that is typical a symptom of highly level anxiety and even depression. Given that he comments on a doctor, that all his vital signs are in check, yet he still feels strange to himself and lost in the universe. "Something's coming over me, like I've lost my mind, but the world is open wide" is an eerily accurate description of how DP feels.
As a sufferer, for me this song could certainly be about a depersonalization or dissociative disorder, something that is typical a symptom of highly level anxiety and even depression. Given that he comments on a doctor, that all his vital signs are in check, yet he still feels strange to himself and lost in the universe. "Something's coming over me, like I've lost my mind, but the world is open wide" is an eerily accurate description of how DP feels.