Individuals with epilepsy have a 2–3 times higher risk of premature death compared to the general population. However, the actual risk varies significantly depending on the type and underlying cause of epilepsy. Life expectancy is most notably reduced in a small subset of patients with epileptic and developmental encephalopathies (such as Dravet syndrome or SCN8A-associated DEE) and in children with severe neurological impairments present from birth.
On the other hand, some individuals—especially those with idiopathic epilepsy—may have a relatively low risk. On average, idiopathic epilepsy shortens life expectancy by about 2 years, while symptomatic epilepsy is associated with a reduction of approximately 10 years.
Common Causes of Premature Death in Epilepsy:
- Trauma and drowning (often as a result of seizures)
- Suicide
- Status epilepticus
- SUDEP (Sudden Unexpected Death in Epilepsy)