This is in contrast to retrograde amnesia, where most memories created prior to the event are lost while new memories can still be created. Both can occur together in the same patient. To a large degree, anterograde amnesia remains a mysterious ailment because the precise mechanism of storing memories is not yet well understood, although it is known that the regions involved are certain sites in the temporal cortex, especially in the hippocampus and nearbysubcortical regions. Many mothers described that instead of feeling less anxious or depressed, they became more hostile and openly aggressive towards the child as well as to other family members while consuming tranquilizers. The author warned that environmental or social stresses such as difficulty coping with a crying baby combined with the effects of tranquilizers may precipitate a child abuse event. In addition, benzodiazepines have reinforcing properties in some individuals and thus are considered to be addictive drugs especially in individuals that have a "drug-seeking" behavior; in addition, a physical dependence can develop after a few weeks or months of use, which is not a problem as one slowly lowers their dose.
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