I wake up screaming. I generally remember a dream I have just had, lasting only a second or two, which involves seeing someone beside the bed. Or sometimes I lash out physically and don't remember having done so. I don't know what to do. This has been going on intermittently for about two and a half years and is ruining my 23-plus year marriage. The incidents terrify my husband, who feels like he's having a heart attack and is afraid it will kill him.