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In neurology, retrograde amnesia (RA) is the inability to access memories or information from before an injury or disease occurred. [1] RA differs from a similar condition called anterograde amnesia (AA), which is the inability to form new memories following injury or disease onset. [ 2 ]
Korsakoff syndrome (KS) [1] is a disorder of the central nervous system characterized by amnesia, deficits in explicit memory, and confabulation.This neurological disorder is caused by a deficiency of thiamine (vitamin B 1) in the brain, and it is typically associated with and exacerbated by the prolonged, excessive ingestion of alcohol. [2]
Although a TGA is scary for both patients and their families, transient global amnesia is a benign condition with an excellent prognosis. Jeff Hersh, Ph.D., M.D., can be reached at DrHersh@juno.com .
A person experiencing TGA has memory impairment; with an inability to remember events or people from the past few minutes, hours or days (retrograde amnesia) and has working memory of only the past few minutes or less, thus they cannot retain new information or form new memories beyond that period of time (anterograde amnesia). [4]
Wernicke encephalopathy typically presents with ataxia and nystagmus, and Korsakoff's psychosis with anterograde and retrograde amnesia and confabulation upon relevant lines of questioning. [ 25 ] Frequently, secondary to thiamine deficiency and subsequent cytotoxic edema in Wernicke encephalopathy, patients will have marked degeneration of the ...
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Likewise, social and emotional support is critical to improving quality of life for those with anterograde amnesia. [28] Fentanyl use by opioid users has been identified as a potential cause in a cluster of cases that occurred in Boston, Massachusetts. [30] Retrograde amnesia is inability to recall memories before onset of amnesia. One may be ...
Amnesia is an abnormal mental state in which memory and learning are affected out of all proportion to other cognitive functions in an otherwise alert and responsive patient. [5] There are two forms of amnesia: Anterograde amnesia and retrograde amnesia, that show hippocampal or medial temporal lobe damage.