Dissociative Amnesia

Dissociative amnesia is a type of dissociative disorder that involves inability to recall important personal information that would not typically be lost with ordinary forgetting. It is usually caused by trauma or stress. Diagnosis is based on history after ruling out other causes of amnesia.


Wik1: W067
Diagnoses: Dissociative Amnesia -See Amnesia-Psychogenic,” entry W009. No differences were listed
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  • Evidence for a pervasive autobiographical memory impairment in Logopenic Progressive Aphasia
    by Siddharth Ramanan on October 15, 2021

    Although characterized primarily as a language disorder, mounting evidence indicates episodic amnesia in Logopenic Progressive Aphasia (LPA). Whether such memory disturbances extend to information encoded pre-disease onset remains unclear. To address this question, we examined autobiographical memory in 10 LPA patients, contrasted with 18 typical amnestic Alzheimer's disease and 16 healthy Control participants. A validated assessment, the Autobiographical Interview, was employed to explore...

  • Clinical manifestation and imaging characteristics of transient global amnesia: patent foramen ovale as an underlying factor
    by Sang-Mi Noh on October 14, 2021

    Transient global amnesia is not rare, but its etiology remains unknown. Cerebral ischemia is a suspected cause because high signal intensity is observed on diffusion-weighted brain magnetic resonance imaging; however, previous studies have not established it as a cause. Of the 128 patients (114 females) enrolled in this study, 82 (64.6%) experienced extreme stress before transient global amnesia. The number of female patients with patent foramen ovale was more than that of males. The patent...

  • Primary phlebitis of central nervous system revealed by black-blood magnetic resonance imaging
    by Jinsoo Koh on October 14, 2021

    Primary phlebitis of the central nervous system (PPCNS) is a rare condition that might be a subset of primary angiitis of the CNS. In this case report, the patient was a 39-year-old man with a 2-week history of anterograde amnesia and abnormal behaviours. Black-blood MRI (BB-MRI) showed contrast enhancement of the left basilar vein and cerebral superficial veins. Angiography showed unremarkable change in arteries. After a thorough differential diagnosis, we diagnosed PPCNS and then administered...

  • Believing in dissociative amnesia relates to claiming it: a survey of people's experiences and beliefs about dissociative amnesia
    by Ivan Mangiulli on October 12, 2021

    Dissociative amnesia is one of the most controversial categories in the field of psychiatry and clinical psychology. Self-reports of dissociative amnesia in the general population, and beliefs about this topic, have so far not been subjected to empirical scrutiny. Here, we surveyed a sample from the general population (N = 1017), revealing that about a tenth (n = 102) claimed to have experienced dissociative amnesia. Some claims pertained to amnesia for traumatic autobiographical experiences...