Amnesia is usually the result of physical damage to areas of the brain from injury, disease, or alcoholism. Brain and Nerve (Tokyo) Volume: 52 Issue: 11 Pages: 979-983 Published: November, 2000.Pathologic impairment of memory. Amnesia following herpes simplex encephalitis. Ishihara K, Kawamura M, Kaga E, Katoh T, Shiota J.Temporal order memory in patients with Korsakoff’s syndrome and medial temporal amnesia " Neuropsychology 2002 40(7):853–61. Downes JJ, Mayes AR, MacDonald C, Hunkin NM.“Early insights into everyday forgetting and recent research on anterograde amnesia”. Dewar, MT Cowan, N Room Pilzecker’s (Jul 2007).Archives of Physical Medicine and Rehabilitation. 66: 626–630. "Reality orientation for brain injured patients: Group treatment and monitoring of recovery". Corrigan, J Arnett, J Houck, L Jackson, R (1985)."Medial temporal lobe amnesia: gradual acquisition of factual information by nondeclarative memory". In these cases, there is no mention of pathology, but difficulties may also appear to learn and remember new information.
Benign forgetfulness of ageįinally, the aging of the brain causes it to deteriorate and lose functionality. In these cases, recent memory is more altered than remote memory. Korsakof syndrome is a very common pathology caused by thiamine deficiency in subjects with chronic alcoholism. Normally, anterograde amnesia disappears once the disease is over. Due to the alteration suffered by attention and consciousness, memory is highly damaged in this pathology. Deliriumĭelirium is a disorder of consciousness that can be caused by different factors. One of its first symptoms is usually the progressive and chronic loss of learning capacity (anterograde amnesia) although later it causes many more cognitive deficits. Dementiaĭementia syndromes are characterized by the generation of neurodegeneration of the brain. This phenomenon is popularly known as “blackout” and causes memory loss for a certain period of time. Alcohol poisoningĪnterograde amnesia can also be caused by alcohol intoxication. The alteration can appear suddenly or progressively, and usually causes anterograde amnesia. EncephalopathyĮncephalopathy is a disease that causes a loss of brain function when the liver is unable to remove toxins from the blood. Head injury is one of the main causes of anterograde amnesia.The damage caused by the impact in the brain regions that modulate memory processes can cause chronic anterograde amnesia, although memory capacity can sometimes be restored. Normally, memory functions usually recover after drug withdrawal, and anterograde amnesia disappears. In these cases, it is convenient to withdraw the medication. The main medications that can cause anterograde amnesia are lorezepam, triazolam, clonazepm, and diazepam. The main pathologies that can cause anterograde amnesia are: Use of benzodiazepinesīenzodiazepines are anxiolytic drugs whose side effects include memory failures. However, in other diseases memory loss can be progressive and chronic. In some cases, the amnesia experienced is temporary and the person can successfully recover their memory.
CausesĪnterograde amnesia is a disorder that can appear in a wide variety of diseases. The high association between anterograde amnesia and korsakoff syndrome means that the participation of the diencephalon in mnesic processes is currently being studied. This last structure is the diencephalon, a region that is highly damaged with Korsakoff syndrome. The most common form of anterior basal brain damage is aneurysms, a condition that has been positively associated with anterograde amnesia.įinally, the relationship between memory disorders and Korsakoff syndrome has suggested that a third region could also be involved in the development of anterograde amnesia. These regions are responsible for producing acetylcholine, a main memory substance, since it initiates and modulates the memorization processes. Specifically, it is theorized that damage to the basal forebrain could also cause this condition.
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