![]() Diagnosis of amnesiaĭiagnosing the cause of amnesia involves a range of tests, including: ![]() In Alzheimer's disease, the person typically remembers past events, but experiences memory losses dating from the onset of their condition. The type of memory loss experienced depends on which parts of the brain are affected. Brain trauma or some types of brain surgery, may damage vital memory structures. ![]() In more severe cases, memory loss may be permanent. These episodes of amnesia are usually temporary. The stress of a traumatic event may also interfere with the processing of short term memories. Concussion, seizures and electroconvulsive therapy seem to temporarily disrupt the electrical activity of the brain and prevent the short term memory from working properly. The severity of amnesia depends on the cause.
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