Epilepsy Flashcards
Otahara syndrome:
- Onset
- Seizure type
- other features
- EEG (interictal)
- EEG (ictal)
- Onset: first 10 days of life
- Seizure types: Multiple clusters of tonic spasms
- Other features: hypotonia, developmental arrest
- EEG Interictal: burst suppression
- High amplitude spike-and-wave followed by generalized fast activity (figure)

What is this?

Forehead plaque (Tuberous sclerosis)
Most common abnormal Brain finding in patients with temporal lobe epilepsy
- Mesial temporal sclerosis
most common gene associated with epilepsy of infancy with migrating focal seizures
KCNT1
Rate of depression in epilepsy
30%
Common EEG abnormalities with Temporal lobe epilepsies
- Temporal spikes and sharp waves (duh)
- Temporal delta slowing (TIRDA)
Most common genetic cause for frontal lobe epilepsy
Autosomal dominant frontal nocturnal epilepsy: acetylcholine receptor (Ach-R) mutation
Epilepsy localization by semiology: Frontal lobe
- Fencer posture
- hyperkinetic behaviors (rocking, bicycling, pelvic thrusting, back arching)
- Focal clonic movements
- Fencer Posture = Supplementary motor area (tonic / dystonic features)
- Hyperkinetic behaviors = Dorsolateral / orbitofrontal
- Focal clonic = posterior frontal
Channels (2) and receptors (2) most commonly affected in childhood absence epilepsy
- Calcium and chloride channels
- GABA-A and GABA-B receptors
Treatments for absence epilepsy (4) and drugs to avoid (4)
Treatment:
- Ethosuximide (first line)
- valproate
- lamotrigine
- levetiracetam
Avoid:
- carbamazepibne
- vigabatrin
- tiagabine
- phenytoin
Treatments (5) and drugs to avoid (2) in Juvenile myoclonic epilepsy
Treatment
- Valproate (first line if not a woman of childbearing age)
- levetiracetam
- lamotrigine
- topiramate
- zonisamide
Drugs to avoid
- carbamazepine
- oxcarbazepine
Genes associated with juvenile myoclonic epilepsy (per BtB)
(3)
- EFHC1
- GABRA1
- CLCH2
Age-range an peak onsest for Lennox-Gastaut Syndrome
1-8 years
Peak is 3-5 years
Drug known to increase drop-attacks in LGS
Carbemazepine
Typical age of onset of Landau-Kleffner syndrome
2-11 years
Mechanisms of action:
- Phenobarbital
- Phenytoin
- Carbamazepine
- Ethosuximide
- Valproic acid
- Phenobarbital: GABA enhancer
- Phenytoin: Na+ blocker
- Carbamazepine: Na+ blocker
- Ethosuximide: Ca++ blocker
- Valproic Acid: Na+ blocker, Ca++ blocker, GABA enhancer
Side Effects:
Phenytoin (7)
- Drowsiness
- Nausea
- Ataxia
- Gingival hyperplasia
- Rash
- Neuropathy
- Cardiac suppression (was originally used as an anti-arrhythmic
Side Effects:
Carbamazepine (6)
- Dizziness
- Nausea
- Ataxia
- Double vision
- thrombocytopenia
- Leukopenia
Side Effects:
Phenobarbital (2)
- Sedation
- “mental slowing”
Side Effects:
Ethosuximide (5)
- Drowsiness
- Confusion
- Insomnia
- Headache
- Ataxia
Side Effects: Valproate
“CNS” (4)
“GI” (5)
“Female” (2)
Other (1)
- “CNS-related”
- Drowsiness
- Dizziness
- Ataxia
- Tremor
- GI
- nausea
- weight gain
- Transaminitis
- Pancreatitis
- Eosinophilic colitis
- “Female”
- Teratogenicity
- PCOS
- Other: hair loss




Adverse effects Lamotrigine
(5)
- Rash (SJS)
- Headache
- ataxia
- somnolence
- vivid dreams
Adverse effects:
Oxcarbazepine (6)
- Fatigue / somnolence
- Dizziness
- ataxia
- double vision
- hyponatremia
- rash
Adverse Effects:
Topiramate (8)
- Somnolence
- dizziness
- ataxia
- parasthesia
- Mental slowing
- weight loss
- renal stones
- Acute angle-closure glaucoma
Adverse Effects:
Zonisamide (5)
- Renal stones
- dizziness
- ataxia
- mental slowing
- weight loss
- renal stones
(basically topiramate minus somnolence and parathesias)
Adverse effects:
Keppra (5)
- somnolence
- dizziness
- headache
- personality change / aggressiveness
- depression / SI
Adverse Effects:
Lacosamide
- Dizziness
- ataxia
- diplopia
- nausea
- depression
Adverse Effects:
Vigabatrin (4)
- Somnolence
- headache
- agitation
- visual field loss
Adverse Effects:
Tiagabine (4)
- Dizziness / somnolence
- depression
- confusion
- ataxia
Adverse Effects:
Gabapentin / Pregabalin (6)
- Somnolence
- dizziness
- ataxia
- tremor
- edema
- weight gain
Adverse Effects:
Clobazam (5)
- Dizziness
- Somnolence
- ataxia
- diplopia
- dysarthria
- (rare) SJS / TEN
Adverse Effects:
Rufiamide (6)
- Dizziness\Drowsiness
- Nausea
- headache
- rash
- mood changes
- Shortening of QTc (get EKG before starting)
Adverse Effects:
Perampanel (4)
- Fatigue
- dizziness
- ataxia
- FDA warning for psychiatric effects (homicidal ideation)
Adverse Effects
Ezogabine / Retigabine
- Dizziness
- Drowsiness
- slurred speech
- FDA warning (Skin discoloration / retinal pigment changes)
Antiseizure medications used for generalized epilepsy:
(6)
- leviteracetam
- topiramate
- valproate
- ethosuximide
- zonisamide
- lamotrigine
Major Risk factors for SUDEP:
(10)
- Uncontrolled epilepsy
- Epilepsy of an early onset
- Multiple ASMs
- Subtherapeutic levels of ASMs
- Young age (20-40)
- Male Sex
- Neurologic comorbidities
- Sleep / nocturnal seizures
Benign Familial Neonatal Seizures VS Benign Familial Neonata-Infantile seizures
Benign familial neonatal seizures (BFNS):
- Autosomal Dominant
- KCN2 and KCN3
- Onset: Typically DoL 2-8 but can be up to 6 months
- Interictal EEG: normal
- Ictal eeg: Asymmetric Spike-wave
Benign familial neonatal-infantile Seizures
- ***
- SCN2A
- Onset: 2 days to 7 months (peak 2-3 months)
- Seizure type
- focal motor with yead / eye deviation
- often with 2/2 generalization
- Interictal EEG: normal
- Ictal EEG: onset typically in posterior quadrant
Early myoclonic encephalopathy
- Onset
- Interictal EEG
- Seizure types
- Etiology (2)
- Onset: first 3 months
- EEG: burst suppression mostly during sleep, awake: multifocal spikes
- Seizure types
- myoclnic (mostly face and eyelids), migrates
- tonic
- focal
- Etiology
- Metabolic
- IEM
Ohtahara syndrome
- Onset:
- EEG:
- Seizure types (MC + 2 more)
- Etiology (2)
- Onset: first 3 months
- EEG: Burst suppression
- Seizure types
- Mostly tonic spasms
- myoclonic
- focal seizures
- Etiology
- CNS malformations
- Genetic
CECTS
- Onset
- Seizure types (6)
- EEG
- Onset: 18 months - 13 years (peak 5-10 years)
- Seizure types
- Nocturnal Focal motor onset with bilateral spread to Tonic clonic
- Diurnal focal seizures from rolandic area, often with preserved consciousness
- Classic features
- Hemi-facial seizures (30%)
- Speech arrest (40%)
- Hypersalivation (30%)
- other oropharyngeal symptoms (53%)
- EEG
- …centro-temporal spikes
Panayiotopoulos syndrome verus Gastaut type epilepsy
Panayiotpoulos (early) type
- Onset: 1-14 years, peak 4-5 years
- Seizure clues
- Pallor
- Flushing
- vomiting
- subtype involves minutes of flaccid hypotonia
Gastaut (late) type
- Onset: 4-14 years, peak 8 years
- seizure clues
- Visual hallucination
Criteria For Neurofibramatosis Type 2
Need one of the following
- Bilateral eightth nerve masses
- First degree relative with NF-2 AND unilateral eighth nerve mass
- or-
Two or more of the following
- Neurofibroma
- meningioma
- glioma
- schwannoma
- juvenile posterior subscapular lens opacity
Treatment for Rasmussen’s Encephalitis (4)
- IVIG
- Plasmaphoresis
- Steroids
- Hemispherectomy
Gelastic Seizures are (for the boards) one-to-one with ____, and is treated with _____
Gelastic Seizures are (for the boards) one-to-one with Hypothalamic Hammartoma, and is treated with resection or ablation
What is this?

Hypothalamic Hammartoma
Workup for BRUE (6)
- screen for GERD
- urinalsysis / culture
- (consider) neuroimaging)
- (consider) EEG
- pneumoimaging
- WBC
Typical age range for febrile seizures
6 months to 5 years
Peak 1-2 y.o.
Seizure auras and location
dysphasic psychic
dysmnesic aura
cognitive psychic aura
Illusions
- dysphasic aura = left perisylvian area
- dysmnesic aura = mesobasal temporal lobe
- cognitive psychic aura = frontal association cortex (“cognitive association”)
- Illusions = left superior temporal neocortex (“these illusions are super new, but temporary)
Key factor differentiating CDLK5 from Rhett Syndrome (2)
- CDLK5 deficiency syndrome patients never show normal developmental milestones
- CDLK5 patients usually have early onset seizures (within first 3 months, as opposed to 6-18 months)
Common Progressive myoclonic epilepsies and their respective chromosomes
“SLUMiN it”
Sialidosis (6p)
Lafora disease (6p - EPM2B and 6q - EPM2A)
Unverricht-Lundborg disease (EPM1 21q)
MERRF (mitochondrial lysine)
NCL (multiple genes / chromosmes)
Unverricht-Lundborg Disease
Inheritance
Defect in cystatin B on chromosome 21
age of onset
Additional features (2)
“U, Little Cys. Be Smart and don’t get High until you’re 21, or else you’ll have to sweat or you’re bound to be SLUMiN it later on
Autosomal recessive
age 6-18 (“little sis”)
defect in cystatin B on chromosome 21
intelligence often preserved until late in course
may have high SSEPs
axillary biopsy may show membrane bound vacuoles on ecrine sweat glands
Form of progressive myoclonic epilepsy (acronym SLUMi_N_)
Patient with Seizures (or bipolar, or trigeminal nerualgia) is treated with Carbemazepine presents with toxicity despite no changes in dose
What are 3 substances which could have caused this?
Cimetidine (transient)
erythromycin
Grapefruit juice
Hallmark features of Autosomal Dominant Epilepsy with Auditory features as well
Auditory phenomena (Humming, buzzing,,,,,,,, ringing)
Receptive aphasia
Medications to avoid with epilepsy
there’s a LOAD of medicines that cause seizures to HATCH
- *L**ithium
- *O**piates
- *A**ntidepressants
- *D**opamine agonists
Hypnotics
Antipsychotics
Triptans
CHolinesterase Inhibitors