Which condition is characterized by dementia, myoclonus, and biphasic or triphasic repetitive discharges?

Which condition is characterized by dementia, myoclonus, and biphasic or triphasic repetitive discharges?

• A. Subacute sclerosing panencephalitis (SSPE)
• B. Reyes syndrome
• C. Creutzfeldt-Jakob disease (CJD)
• D. Wilson's disease

Answer: (C)

The condition characterized by dementia, myoclonus, and biphasic or triphasic repetitive discharges is Creutzfeldt-Jakob disease (CJD). CJD is a prion disease that leads to rapidly progressive dementia and neurological symptoms. The myoclonus seen in patients with CJD is a hallmark feature of the disease, and the distinctive electroencephalographic (EEG) finding of biphasic or triphasic discharges is often observed in the later stages. These specific EEG patterns are significant because they can assist in the differentiation of CJD from other neurodegenerative disorders and help in establishing the diagnosis. The conjunction of cognitive decline, involuntary jerking movements (myoclonus), and these specific EEG findings create a profile that is highly indicative of CJD, making it the correct answer among the provided options. Subacute sclerosing panencephalitis (SSPE) does involve changes in cognitive function and may have distinct EEG patterns but is primarily linked to post-measles viral infection. Reyes syndrome can result in encephalopathy often characterized by different EEG changes and is associated with acute liver failure, generally not featuring myoclonus. Wilson's disease is a genetic disorder that can

The condition characterized by dementia, myoclonus, and biphasic or triphasic repetitive discharges is Creutzfeldt-Jakob disease (CJD). CJD is a prion disease that leads to rapidly progressive dementia and neurological symptoms. The myoclonus seen in patients with CJD is a hallmark feature of the disease, and the distinctive electroencephalographic (EEG) finding of biphasic or triphasic discharges is often observed in the later stages.

These specific EEG patterns are significant because they can assist in the differentiation of CJD from other neurodegenerative disorders and help in establishing the diagnosis. The conjunction of cognitive decline, involuntary jerking movements (myoclonus), and these specific EEG findings create a profile that is highly indicative of CJD, making it the correct answer among the provided options.

Subacute sclerosing panencephalitis (SSPE) does involve changes in cognitive function and may have distinct EEG patterns but is primarily linked to post-measles viral infection. Reyes syndrome can result in encephalopathy often characterized by different EEG changes and is associated with acute liver failure, generally not featuring myoclonus. Wilson's disease is a genetic disorder that can