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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. Migraine history, cardiovascular risk factors, and emotional stress are considered possible risk factors. TGA usually occurs during the seventh decade of life, that is, when risk factors and concomitant pathologies have a higher incidence.We report 3 cases of TGA triggered by different causes (cardiovascular risk factors, emotional stress, and orgasm) with an unusual young onset (patient 1 was a 40-year-old woman, patient 2 was a 21-year-old woman, and patient 3 a 32-year-old man). The patients underwent neuroimaging and cardiovascular examination, and neuropsychological evaluation, without important abnormalities. TGA completely recovery within 1 to 7 days.The occurrence of different precipitating events and accurate questioning (in the absence of head trauma) seem to be key features in making the diagnosis of TGA, besides a complete neuropsychiatric and cardiovascular assessment.