<unk>  <unk>  is a dissociative disorder in which sufferers are affected by persistent feelings of<unk> . The symptoms include a sense of automation, feeling a disconnection from one's body, and difficulty relating oneself to reality.  Occasional moments of<unk>  are normal, but a persistent feeling is not. Brief periods of<unk>  are notably caused by stress, a lack of sleep, or a combination.  It becomes a disorder when the dissociation interferes with the social and occupational functions necessary to everyday living. Often a victim of<unk>  feels as if he or she is going insane, though this is almost never the case.<unk>  is often associated as a comorbid disorder of anxiety disorders, panic disorders, clinical depression, and/or bipolar disorder.  Anxiety can exacerbate<unk>  symptoms. In addition,<unk>  can cause anxiety since the person feels abnormal and uneasy at the loss of their sense of self.  Reality testing remains intact during episodes and continuous<unk> , meaning that a person suffering from the disorder will be able to respond to questions and interact normally with his or her environment. This fact can be distressing for those with<unk> ; the friends and family of the victim do not realise that anything is wrong, because a person with<unk>  will usually not be visibly distraught.  While a nuisance, and very distressing to the sufferer, people with<unk>  represent no risk to society, since their grasp on reality remains intact.
Depersonalization disorder
Dissociative disorders
Dissociative identity disorder
Fetishistic disorder
Psychopathy
Somatoform disorder
Exhibitionistic disorder
Delusional misidentification syndrome