![]() Loss of episodic memory, ie, a person’s unique memory of a specific event, can be affected by neurologic disorders such as a traumatic brain injury, hydrocephalus, brain tumors, and metabolic conditions such as vitamin B1 deficiency.įugue. A clinical syndrome characterized by abrupt onset of severe anterograde amnesia from which the patient usually recovers within hours except for the memory gap for the duration of the attack. Implies difficulty in registering new information (learning ability). It is usually present in amnestic state or syndrome and affects individuals for a limited period.Īnterograde amnesia. Refers to difficulty in recalling events that have occurred in the premorbid period. Isolated memory loss, also referred to as an amnestic syndrome, is also seen as an adverse reaction to drugs. ![]() Memory is disturbed in several conditions often secondary to disorders of attention. Usually refers to a pathological loss of memory. Various terms referring to memory disorders in this article are:Īmnesia. Cognitive disturbances include delirium, disturbances of memory, intellect, and behavior. Thus, attention and memory are processes that operate together, and drugs affecting attention would be expected to impair memory as well. Working memory corresponds to the set of things we are attending to at any given moment. According to the "working memory" model, the allocation of limited resources available for information processing is under the control of the central executive. The frequently used term “cognitive impairment” refers to disturbances of information processing, which covers the acquisition, storage, retrieval, and use of information. The first mention of a therapeutic drug-induced dementia was after the introduction of synthetic drugs for the treatment of Parkinson disease ( 35). The focus of this article is on medication-induced memory disturbances, but studies of drugs of abuse, both experimental and clinical, also shed light on the pathomechanisms of drug-induced memory loss. Several commonly used therapeutic drugs and medications, and some recreational drugs, are known to produce memory disturbances, as is exposure to industrial chemicals.
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