| A | B |
| Dissociative disorders | defined by a disruption in psychobiological functions that would otherwise be integrated aspects of experience and cognition, including memory, identity, consciousness, perception, behavior, emotion, body representation, and motor control |
| Dissociation | An unconscious defense mechanism in which there is separation of normally related mental processes such as identity, memory, and cognition from affect; the detachment of ideas and memories from events or experiences. |
| Somatic symptom disorder | a syndrome of multiple somatic symptoms that cannot be explained medically and are associated with psychosocial distress and frequent visits to health-care professionals to seek assistance. |
| Illness anxiety disorder | defined as an unrealistic or inaccurate interpretation of physical symptoms or sensations, leading to a preoccupation with and fear of having a serious disease. |
| Conversion disorder | a loss of or change in body function that cannot be explained by any known medical disorder or pathophysiological mechanism. |
| Aphonia | inability to produce voice |
| Anosmia | inability to perceive smell |
| Pseudocyesis | false pregnancy |
| Factitious disorders | pretend to be ill to receive emotional care and support commonly associated with the role of “patient.” |
| Factitious disorder by proxy | physical symptoms are intentionally imposed on a person under the care of the perpetrator. |
| Amnesia | Partial or total loss of memory. Memory loss may be temporary or permanent. |
| Dissociative amnesia | an inability to recall important personal information, usually of a traumatic or stressful nature, that is too extensive to be explained by ordinary forgetfulness and is not due to the direct effects of substance use or a neurological or other medical condition |
| Localized amnesia | unable to recall all incidents associated with a stressful period. |
| Selective amnesia | the individual can recall only certain incidents associated with a stressful event for a specific period after the event. |
| Generalized amnesia | the individual has amnesia for his or her identity and total life history. |
| Dissociative fugue | is characterized by sudden, unexpected travel away from customary places or by bewildered wandering, with the inability to recall some or all of one’s past. |
| Dissociative identity disorder (DID) | characterized by the existence of two or more personality states in a single individual. |
| Depersonalization-derealization disorder | characterized by a temporary change in the quality of self-awareness, which often takes the form of feelings of unreality, changes in body image, feelings of detachment from the environment, or a sense of observing oneself from outside the body. |