![]() ![]() There is conflicting evidence as to whether an episode of TGA predisposes to future seizures or dementia. No apparent increased risk of cerebrovascular events occurs in patients who have had an episode of TGA. Transient global amnesia (TGA) is a sudden, temporary loss of memory. Recent evidence suggests an association between TGA and migraine headaches as well as takotsubo cardiomyopathy. The lifetime recurrence rate is 2.9% to 23.8%. There is no established treatment for episodes. TGA is self-limited and resolves within 24 hours. Most patients do not experience recurrence. Since there is a temporary loss of memory, the patient cannot recollect events that happened during the episode of amnesia. The diagnosis is primarily clinical, but recent studies suggest that magnetic resonance imaging may be helpful. Transient global amnesia is a benign condition which usually resolves by itself within 24 hours from onset of amnesia without the need for any medical assistance or intervention. The pathophysiology of TGA is not well understood but may be related to impaired venous drainage of the hippocampus. A physically or psychologically stressful precipitating event, such as emotional stress, significant physical exertion, exposure to extreme temperatures, high-altitude conditions, Valsalva maneuver, acute illness, or sexual intercourse, is often the cause. ![]() Vomiting, headache, blurry vision, dizziness, and nausea may be present. Transient global amnesia (TGA) is a rare medical condition in which a person experiences a sudden episode of memory loss. Global means that the loss of memory is severe and often. Transient global amnesia is a relatively rare syndrome characterized by a sudden onset of severe anterograde amnesia and confusion that often includes. ![]() Clinically, patients have time disorientation and often ask repeated questions regarding the day's events. Transient indicates that what happens is brief and, importantly, that the symptoms resolve completely. Most commonly seen in patients older than 50 years, TGA results from the temporary impairment of short-term memory formation. Transient global amnesia (TGA) is a clinical syndrome characterized by the acute onset of anterograde amnesia (the inability to form new memories) 1-3. Migraine history, cardiovascular risk factors, and emotional stress are considered possible risk factors. Transient global amnesia (TGA) is a clinical syndrome characterized by anterograde amnesia, mild retrograde amnesia, and confusion up to 24 hours. Transient global amnesia (TGA) is characterized by a sudden onset of anterograde and retrograde amnesia, sometimes associated with mild subclinical neuropsychological deficits and vegetative symptoms, lasting for days after the episode. ![]()
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