Anterograde amnesia, retrograde amnesia, and confabulation. It is reversible upon discontinuation of the drug.Īlzheimer's Disease, Pick's Disease, Parkinson's DiseaseĬaused by thiamine deficiency due to prolonged alcohol use or severe malnutrition. Amnesia is anterograde from the time the drug was introduced and patient has impairment in forming new memories. Memory loss could be long term or short term. īenzodiazepine are the most common group of drugs that can cause drug-induced amnesia, especially if used with alcohol. Influenced by cultural norms and sexual repression. Early childhood memory is lost, usually up to the age of fours year. Extent of injury and duration of loss of consciousness are important prognostic factors in determining the severity of amnesia. The span of memory loss is uncertain it could present with retrograde, anterograde or combined. Īmnesia that follows head trauma could be temporary or permanent. Usually last less than twenty four hours. Sudden episodic loss of anterograde and partial retrograde memory. It is reversible and has variable time duration. Dissociative fugue has been observed in these patients where the identity and memory is lost.Repressed amnesia is seen in patients where they are unable to recall a stressful or traumatic incident from the past due to psychological defense mechanism.Dissociative Amnesia is also referred to as psychological amnesia. Temporary, episodic retrograde memory loss without structural brain damage. Long-term memory are long lasting and are formed by structural/functional changes in neuronal network.Short-term memory are for short period of time and use existing neuronal network.Memory can also be divided into groups depending on the duration:.Retrograde amnesia: The loss of memory prior to the onset of amnesia.Anterograde amnesia: The inability to form new memory.Amnesia can be divided into two broad groups:.Memory can also be divided into two groups depending on the duration, short-term memory and long-term memory. Other types of amnesia are Psychological including repressive amnesia and dissociative fugue, infantile amnesia, neurological amnesia ( Alzheimer's disease, Pick's disease), post- traumatic Amnesia, drug-Induced Amnesia, transient global amnesia. Retrograde amnesia is the loss of memory prior to the onset of amnesia and anterograde amnesia is the inability to form new memory. Associate Editor(s)-in-Chief: Zehra Malik, M.B.B.S OverviewĪmnesia can be divided into two broad groups, retrograde amnesia and anterograde amnesia. Risk calculators and risk factors for Amnesia classificationĮditor-In-Chief: C. Natural History, Complications and PrognosisĪmerican Roentgen Ray Society Images of Amnesia classificationĪll Images X-rays Echo & Ultrasound CT Images MRI Differentiating Amnesia from other Diseases
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