Retrograde Amnesia

Retrograde amnesia is a form of amnesia where someone is unable to recall events that occurred before the development of the amnesia, even though they may be able to encode and memorize new things that occur after the onset.


Cluster Number:
Wiki Number: PW188
Diagnosis: Retrograde Amnesia
US Patients:
World Patients:
Sex Ratio:
Age Onset:
Brain Area: hippocampus stores short-term memories; long-term in the neo-cortex; encephalitis-swelling of the brain,
Symptoms: losing past memories, but not “procedural” (how to do things) memories; can continue to create new memories
Causes: traumatic brain injuries; “shaken babies.” sports-head injuries- CTE, traumatic experiences affecting amygdala, thiamine deficiency
Medications: None listed.
Therapies: None listed. Sometimes recovery is spontaneous.


The world-wide medical research
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PubMed article’s summary-abstract.

    by Marina Raguž on September 30, 2021

    Intraventricular meningiomas are rare and make up between 0.5% and 3% of all intracranial meningiomas, representing one of the most challenging tumors in neurosurgery due to their difficult location. Being initially asymptomatic, such tumors usually attain large size before clinical presentation and diagnostic detection. Available literature concerned with their surgical management remains scarce. Herein, we present a case of microsurgical resection of incidental intraventricular meningioma in a...

  • Unexplained falls in the elderly
    by Martina Rafanelli on September 13, 2021

    Falls are a geriatric syndrome affecting mortality, morbidity, and institutionalization. Falls are also the leading cause of unintentional injury and a common emergency department presentation. Physical and psychological issues may develop after falling, leading to increase in dependency and disability and their relative costs. The pathogenesis of falls is multi-factorial, being indeed the result of the interaction between increased individual susceptibility, high risk activities and...

  • Retrograde amnesia of contextual fear conditioning: Evidence for retrosplenial cortex involvement in configural processing
    by Travis P Todd on August 30, 2021

    It has been suggested that contextual fear conditioning can be supported by either an elemental system, where individual features of the environment are associated with shock, or a configural system, where environmental features are bound together and associated with shock. Although the retrosplenial cortex (RSC) is known to be involved in contextual fear conditioning, it is not clear whether it contributes to the elemental or configural system. To isolate the role of the RSC in contextual fear...

  • Immediate retrograde amnesia induced by midazolam: a prospective, nonrandomized cohort study
    by Hye-Min Sohn on August 25, 2021

    CONCLUSION: Intravenous midazolam could cause a brief-period retrograde amnesia in visual and event memory. Moreover, there were more spurious reports of intraoperative factitious events in the midazolam group, implying that episodic memories were also affected by midazolam.