Can a Fall Cause Seizures? Understanding Post-Traumatic Seizures

A fall does not directly cause epilepsy, but head trauma from a fall can lead to seizures through several mechanisms.

Mechanisms Linking Falls to Seizures

Risk Factors for Post-Traumatic Seizures

• Severity of TBI (GCS <13, penetrating, depressed fracture, hematoma, contusion, LOC >30 min).
• Age >65 or <5.
• Alcohol misuse.
• Prior seizures / family history.
• Early post-traumatic seizure (within 7 days) → higher risk of late PTE.

Clinical Approach After a Fall with Seizure

1. Emergency evaluation: ABCs, glucose, neuro exam, non-contrast head CT (rule out bleed).
2. EEG if altered mental status persists or seizure recurs.
3. Antiseizure medication: Short course (7 days) for early post-traumatic seizures; long-term only if late seizure / PTE diagnosed.
4. Follow-up: Neurology; monitor for PTE development (risk up to 5+ years).

Not all falls cause seizures, but any seizure after head trauma requires urgent medical assessment.

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Mechanism	Description	Timing
Traumatic Brain Injury (TBI)	Cortical contusion, diffuse axonal injury, hematoma → hyperexcitable cortex	Immediate (impact) → early (<1 wk) → late (>1 wk, months-years)
Subdural / Epidural Hematoma	Mass effect, cortical irritation, ischemia	Acute (hrs) or chronic (weeks)
Cerebral Edema	Swelling → increased ICP, herniation risk	Peaks 24–72 hrs post-injury
Post-Traumatic Epilepsy (PTE)	Epileptogenesis from structural damage; risk correlates with TBI severity	Months to years later (latent period)
Hypoglycemia (secondary)	Immobilization → reduced intake → hypoglycemia (esp. elderly, diabetics)	Days after fall
Medication Side Effects	Opioids, tramadol, muscle relaxants, antibiotics (fluoroquinolones) ↓ seizure threshold	After medication initiation
Pre-existing Epilepsy	Fall triggers breakthrough seizure (stress, sleep deprivation, missed meds)	Any time