{'fraction_non_alphanumeric': 0.0273224043715847, 'fraction_numerical': 0.0036429872495446266, 'mean_word_length': 4.851063829787234, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
An Unusual Form of Memory Loss

Disturbance of memory is one of the commonest symptoms in the diagnostic puzzles presented in late life. The presumption often made (and not infrequently ill-founded) by the subject or their carers is that Alzheimer's disease is the cause. One possible reason for loss of memory, rare but important to identify because the outcome is benign, is transient global amnesia (TGA). The condition, first described over 30 years ago [ll but which still evades adequate explanation, is illustrated by the following two cases.