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19 Possible Causes for Focal Delta Activity, Progressive Memory Impairment

  • Brain Concussion

    CTE is marked by "memory loss, confusion, impaired judgment, impulse control problems, aggression, depression, and, eventually, progressive dementia," according to Boston[rt.com] The symptoms of CTE may include memory loss, confusion, impaired judgment, impulse control problems, aggression, depression, anxiety, suicidality, parkinsonism (movement symptoms[alz.org] […] similar to Parkinson's disease), and, eventually, progressive dementia.[alz.org]

  • Traumatic Brain Injury

    The symptoms of CTE may include memory loss, confusion, impaired judgment, impulse control problems, aggression, depression, anxiety, suicidality, parkinsonism (movement symptoms[alz.org] […] similar to Parkinson's disease), and, eventually, progressive dementia.[alz.org]

  • Encephalitis

    Severe cases can cause permanent impairment including fatigue, irritability, impaired concentration, seizures, hearing loss, memory loss, and blindness.[cedars-sinai.org] Unfortunately, severe cases can cause permanent impairment including fatigue, irritability, impaired concentration, seizures, hearing loss, memory loss, and blindness.[hopkinsmedicine.org] In some severe cases, the disease progresses rapidly causing death. Can encephalitis be prevented?[cedars-sinai.org]

  • Rasmussen Syndrome

    Progressive weakness on one side (hemiparesis) and thinking/memory impairment are common.[epilepsy.com] Focal delta activity without epileptiform spikes may preceed the onset of epilepsia partialis continua by several months.[pediatricneurologybriefs.com] Hemiparesis or ‘ hemiplegia ’ (progressive weakening on one side of the body) is common and memory/thinking impairments may be observed.[rscdiagnosticservices.com]

  • Meningoencephalitis

    After admission, the confusion progressed and the patient experienced memory impairment and motor agitation.[n.neurology.org] […] or theta frequencies and focal sharp-wave activity. 14 Pathological findings of von Economo disease typically consist of a nonhemorrhagic involvement of the gray matter,[jamanetwork.com] […] invariably normal, but oligoclonal band positivity has been reported. 21 An EEG during the acute phase of the illness often shows diffuse unilateral or bilateral slowing in the delta[jamanetwork.com]

  • Stupor

    This syndrome is related to the progressive impairment of health conditions and/or stressing events (ie, hospitalization), characterized by confusion and/or stupor, which[ncbi.nlm.nih.gov] EEGs in the former may show focal disturbances such as delta and theta activity, epileptiform abnormalities, and attenuation of faster frequencies.[ncbi.nlm.nih.gov] […] associazionegeriatri.it Abstract A significant percentage of elderly subjects (50%-80%) suffering from sub-acute ischemic cerebrovascular disease, with or without moderate or severe cognitive memory[ncbi.nlm.nih.gov]

  • Temporal Lobe Tumor

    Although radiation therapy may lead to longer survival, the side effects of radiation, such as impaired thinking and memory, limit its practical use in people with these tumors[aans.org] […] broad sharp delta activity over the area of the tumor.[karger.com] Slow wave activity Focal delta (EEG frequency 4 Hz) activity is the classic electrographic sign of a local disturbance in cerebral function; however, if the lesion is small[emedicine.medscape.com]

  • Hypoglycemic Encephalopathy

    […] mental impairment characterised by short-term memory loss and confabulation chronic and irreversible Wet Beri-Beri tachycardia vasodilation high cardiac output fluid overload[lifeinthefastlane.com] […] lesions; seizure activity; EEG of metabolic encephalopathy is liable to have diffuse slowing in the delta-theta frequencies, while degenerative disease may cause little ([dartmouth.edu] Subsequently (usually within 4 months), patients develop overt neurological dysfunction with prominent sensory symptoms (if not yet present) memory impairment, ataxia dysarthria[neuroweb.us]

  • Encephalopathy

    As the disease progresses, some patients may experience problems with thinking and memory, including memory loss, confusion, impaired judgment, and eventually progressive[concussionfoundation.org] […] lesions; seizure activity; EEG of metabolic encephalopathy is liable to have diffuse slowing in the delta-theta frequencies, while degenerative disease may cause little ([dartmouth.edu] Extensive neuropsychological testing revealed distractibility, poor concentration and memory impairments consistent with a depressive episode.[doi.org]

  • Locked-in Syndrome

    The development of multiple cognitive defects manifested by both: (1) Memory impairment (impaired ability to learn new information or to recall previously learned information[ecronicon.com] Some subjects showed minor focal or bilateral disturbances in the theta or fast delta range.[n.neurology.org] Dementia is enduring and progressive decline in mental process due to organic processes. Arousal may not be affected. DSM-IV defines dementia as follows: A.[ecronicon.com]

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