Epilepsy and Seizure Management: Comprehensive Guide

Understanding Epilepsy: A Chronic Neurological Disorder

Epilepsy affects 1% of population with 150,000 new diagnoses annually. Characterized by recurrent seizures, epilepsy is highly treatable. Understanding seizure types and triggers enables effective management and seizure control in 70% of patients.

Epilepsy Facts:

• Affects 3-4 million people in US
• Defined by tendency for recurrent seizures
• 70-80% of people with epilepsy can achieve seizure control with medication
• 10-15% are drug-resistant requiring advanced treatment
• Early diagnosis and appropriate treatment improves long-term outcomes

Seizure Types: Classification and Recognition

Generalized Seizures (Involve Both Hemispheres)

Tonic-Clonic Seizures

• Tonic phase: 10-20 seconds muscle stiffening
• Clonic phase: 30-60 seconds rhythmic jerking
• Duration: Usually 1-2 minutes total
• Post-ictal: Confusion, drowsiness lasting minutes to hours
• Injuries: Trauma, tongue biting, incontinence common

Absence Seizures

• Duration: 5-10 seconds typically
• Appearance: Staring spell, unresponsive
• Onset: Usually childhood
• Frequency: May occur dozens per day
• Recovery: Immediate, no confusion

Focal Seizures (Begin in One Brain Area)

Focal Aware Seizures

• Patient remains conscious and aware
• May have aura (warning sensation)
• Twitching or unusual sensations localized
• May progress to generalized seizure

Focal Impaired Awareness Seizures

• Loss of awareness during seizure
• Often originate in temporal lobe
• Automatisms common (lip smacking, picking at clothes)
• Post-ictal confusion lasting minutes

Triggers and Risk Factors

Common Seizure Triggers

• Sleep deprivation: Most common trigger (avoid <6 hours)
• Stress: Emotional or physical stress increases seizure risk
• Flickering lights: 3-60 Hz can trigger photosensitive seizures
• Menstrual cycle: Women may have catamenial seizures
• Alcohol: Acute intoxication and withdrawal both trigger seizures

Epilepsy Risk Factors

• Head trauma (especially severe/with LOC)
• Stroke or TIA
• Brain tumor or arteriovenous malformation
• Infections (meningitis, encephalitis)
• Family history of epilepsy

Diagnosis: EEG and Neuroimaging

Electroencephalogram (EEG)

• Gold standard: Records electrical activity of brain
• Interictal: EEG between seizures (abnormal in 50-90%)
• Ictal: EEG during seizure (diagnostic)
• Findings: Spike and wave discharges, focal abnormalities
• Types: Routine (20-30 min), prolonged, ambulatory

Neuroimaging

• MRI: Superior sensitivity for structural abnormalities
• CT: Quick assessment in acute settings
• Findings: Temporal lobe sclerosis, lesions, tumors
• Indications: Focal seizures, adult-onset, drug-resistant epilepsy

Antiseizure Medications: Treatment Backbone

First-Generation Medications

Phenytoin (Dilantin)

• Effective broad spectrum coverage
• Multiple drug interactions and side effects
• Requires monitoring (gum hyperplasia, osteoporosis)
• Not preferred first-line but still used

Valproic Acid (Depakote)

• Effective for generalized and focal seizures
• Teratogenic (avoid in pregnancy planning)
• Weight gain and hair loss common
• Liver function monitoring required

Second-Generation Medications (Preferred)

Levetiracetam (Keppra)

• Broad spectrum, effective for generalized and focal seizures
• Minimal drug interactions
• Behavioral changes reported (irritability)
• Well tolerated overall

Lamotrigine (Lamictal)

• Effective for generalized and focal seizures
• Mood improvement (used for depression)
• Rash risk (serious in <1%)
• Slow titration required

Lacosamide (Vimpat)

• Focal seizure specialist
• IV formulation for acute situations
• Cardiac monitoring may be needed

Status Epilepticus: A Medical Emergency

Definition and Recognition

• Definition: Seizure lasting >5 minutes or multiple seizures without recovery
• Mortality: 5-15% if untreated
• Brain damage: Risk increases significantly after 30 minutes
• Common causes: Non-compliance with meds, infection, trauma, withdrawal

Emergency Treatment (Immediate Actions)

• Call 911 immediately
• Position on side (recovery position)
• Loosen tight clothing
• Do NOT force anything in mouth
• Time seizure onset
• If known seizure disorder: Give rescue medication (diazepam, lorazepam)

Hospital Treatment

• First-line: Benzodiazepines IV (lorazepam preferred)
• Second-line: Antiseizure loading (fosphenytoin, levetiracetam, valproate)
• Third-line: Anesthesia if continues despite above
• Investigation: Labs, imaging, LP if infection suspected

Lifestyle Management and Safety

Driving Restrictions

• Seizure-free period required (3-6 months state dependent)
• Auras allow patient to pull over (may not restrict driving)
• Consult neurologist and check state regulations

Safety Precautions

• Swimming: Always supervised, avoid open water
• Heights: Avoid work at heights or risky activities
• Water: Use showers preferably over baths
• Medical alert bracelet: Always wear identifying seizure disorder

Lifestyle Optimization

• Sleep: Maintain consistent schedule, aim for 7-9 hours
• Stress: Stress management and relaxation techniques
• Triggers: Identify and avoid personal triggers
• Medication adherence: Take exactly as prescribed

Key Takeaways: Epilepsy Management

• Identify seizure type accurately for appropriate treatment
• Recognize common triggers and implement avoidance strategies
• Start appropriate antiseizure medication therapy
• Maintain medication adherence for seizure control
• Know status epilepticus recognition and emergency response
• Follow driving restrictions based on seizure control
• Maintain seizure diary to track triggers and medication response
• Work with neurologist for optimal seizure management