Home / Health / Silent Seizures Mimic Dementia, Shocking Diagnosis
Silent Seizures Mimic Dementia, Shocking Diagnosis
18 Aug
Summary
- Epileptic seizures can cause dementia-like symptoms without awareness.
- Epilepsy and dementia share a two- to threefold increased risk.
- Sudden confusion spells may be subtle epileptic seizures, not dementia.

Silent epileptic seizures can manifest as dementia-like symptoms, a condition newly understood by medical experts. Research indicates a substantial two- to threefold increased risk of developing dementia if one has epilepsy, and conversely, a similar increased risk of seizures for those with dementia. These subtle episodes, unlike dramatic grand mal seizures, often present as vacant stares or confusion spells that resolve over hours or days, potentially leading to misdiagnosis.
Cognitive impairment from epilepsy can include accelerated long-term forgetting and a feeling of disconnect from reality. For individuals like Jeff Will, dementia-like symptoms, including confusion and memory loss, were eventually traced to undiagnosed silent seizures. Early diagnosis and treatment with anti-seizure medication, such as Keppra, can halt these cognitive episodes and prevent further memory loss.
The intricate relationship between epilepsy and dementia is becoming increasingly critical as populations age. Both conditions often affect older adults, and their co-occurrence complicates treatment decisions. Experts advocate for wider use of EEG testing in patients with cognitive decline to identify potential underlying seizure activity, ensuring more accurate diagnoses and effective management strategies.