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Epilepsy and Seizure Disorders Reference

Epilepsy was a neurological disorder defined by an enduring predisposition to recurrent epileptic seizures. A seizure was a transient event caused by abnormal, excessive, or unusually synchronized electrical activity in the brain. Not every seizure established epilepsy: fever, infection, metabolic disturbance, intoxication or withdrawal, acute brain injury, and other immediate insults could provoke acute symptomatic seizures without creating an enduring seizure disorder.

Terminology and Classification

The International League Against Epilepsy’s 2014 practical definition allowed an epilepsy diagnosis after any of the following:

  • at least two unprovoked or reflex seizures more than twenty-four hours apart;
  • one unprovoked or reflex seizure with a recurrence risk comparable to that following two unprovoked seizures, generally at least sixty percent over the next ten years; or
  • diagnosis of an epilepsy syndrome.

Epilepsy could later be described as resolved after an age-dependent syndrome had passed or after ten years without seizures, including at least five years without antiseizure medication. Resolved did not mean that the condition had never existed or that future risk was identical to that of someone without an epilepsy history.

The 2017 epilepsy-type classification recognized focal epilepsy, generalized epilepsy, combined generalized and focal epilepsy, and unknown epilepsy. A person’s classification could change as seizure history, EEG findings, imaging, genetics, or longitudinal observation clarified the pattern.

The ILAE’s 2025 seizure classification grouped seizures into four main classes: focal, generalized, unknown whether focal or generalized, and unclassified. It replaced awareness as the principal classifier with consciousness, considered both awareness and responsiveness, and described observable or nonobservable manifestations in chronological order. Clinical records from earlier decades continued to use terms such as ‘’focal aware’‘, ‘’focal impaired awareness’‘, ‘’simple partial’‘, ‘’complex partial’‘, ‘’grand mal’‘, and ‘’petit mal’‘. Those terms required era-appropriate interpretation rather than word-for-word substitution.

An aura was not merely a warning outside the seizure. When epileptic, it was a focal seizure with preserved consciousness that could occur alone or precede a seizure that spread. Not every unusual sensation was epileptic, and many people had no warning before a seizure.

Causes and Risk Factors

Epilepsy etiologies were classified as structural, genetic, infectious, metabolic, immune, or unknown; more than one category could apply. Structural causes included congenital brain differences, stroke, tumor, traumatic brain injury, and remote hypoxic–ischemic injury. Infectious causes included meningitis, encephalitis, and neurocysticercosis. A genetic classification did not necessarily mean that a condition had been inherited from a known parent, and an unknown cause did not imply a psychological origin.

Sleep loss, missed medication, illness, fever, dehydration, alcohol or drug exposure, metabolic disturbance, hormonal change, and acute stress could lower seizure threshold for some people. These factors triggered seizures in a susceptible brain; they did not by themselves define the epilepsy’s underlying cause. Photosensitivity affected only a minority of people with epilepsy, and flashing light was not a universal trigger.

Symptoms and Presentation

Seizures varied according to the networks involved. They could alter movement, muscle tone, sensation, vision, hearing, memory, emotion, language, autonomic function, consciousness, or responsiveness. A seizure could be externally dramatic or nearly invisible.

Focal seizures began in one hemisphere. Manifestations could include unilateral movement or sensory change, an epigastric rising sensation, déjà vu, sudden fear, language disruption, visual or auditory change, automatisms, or impaired consciousness. A focal seizure could spread into a bilateral tonic-clonic seizure.

Generalized seizures rapidly engaged networks on both sides of the brain. Recognized manifestations included absence, myoclonic, tonic, clonic, atonic, myoclonic-atonic, epileptic spasms, and generalized tonic-clonic seizures. Absence seizures could resemble brief lapses in attention. Myoclonic seizures caused brief shock-like jerks. Atonic seizures caused sudden loss of tone. Tonic-clonic seizures commonly involved loss of consciousness, stiffening, rhythmic jerking, and a variable recovery period.

Unknown seizures had insufficient information to determine whether they were focal or generalized. Unclassified seizures remained events that could not be placed in another category even after evaluation. These labels preserved uncertainty rather than forcing a false level of precision.

Recovery also varied. A postictal period could include sleep, confusion, headache, muscle pain, weakness, language difficulty, agitation, emotional change, or amnesia. Some seizure types had little or no obvious postictal state. Todd’s paresis was a temporary focal weakness after some seizures and required distinction from stroke or new injury.

Diagnosis and Differential Diagnosis

Diagnosis began with the event history: what happened before, during, and after; whether consciousness or responsiveness changed; how long the event lasted; whether episodes repeated in a similar pattern; and whether an immediate provoking factor was present. A witness description or safely obtained recording could be especially useful because the person might have no memory of the event.

EEG could show epileptiform activity or help classify an epilepsy, but a normal routine EEG did not exclude epilepsy. Prolonged, ambulatory, or video EEG could be needed when events were infrequent or classification remained uncertain. MRI evaluated structural causes; laboratory, cardiac, infectious, metabolic, genetic, or autoimmune testing depended on the presentation.

Differential diagnosis included syncope, migraine, sleep disorders, movement disorders, transient ischemic attack, metabolic events, intoxication, panic, dissociation, and functional/dissociative seizures. Functional seizures were real involuntary events but did not arise from epileptic electrical activity and did not respond to antiseizure medication as epilepsy treatment. A person could have both epilepsy and functional seizures. Charlie Rivera had functional/dissociative seizures, not epilepsy.

An acute symptomatic seizure during severe infection, metabolic crisis, intoxication, withdrawal, or acute brain injury did not automatically establish epilepsy. Elliot Landry had a tonic-clonic seizure during severe COVID-19 critical illness and later had back-to-back seizures progressing to convulsive status epilepticus that revealed a grade 2 oligodendroglioma; his current history did not assign him a separate epilepsy diagnosis.

Treatment and Management

Antiseizure medication selection depended on the person’s seizure and epilepsy types, cause, age, pregnancy potential, co-occurring conditions, organ function, other medication, and priorities such as alertness, mood, weight, coordination, or fine-motor control. A medication effective for one seizure type could be ineffective or aggravating for another. Medication was taken consistently and was not stopped abruptly without clinical direction.

The ILAE defined drug-resistant epilepsy as failure of two tolerated, appropriately chosen, and adequately used medication schedules to produce sustained seizure freedom. That threshold supported timely referral to a comprehensive epilepsy center rather than endless repetition of similar medication trials.

Further options included resective or disconnective surgery when a removable seizure-generating region could be identified, laser ablation in selected cases, vagus nerve stimulation, responsive neurostimulation, deep brain stimulation, and medically supervised dietary therapy. These approaches were individualized. Neurostimulation could reduce frequency or severity without eliminating seizures, and epilepsy surgery required presurgical evaluation rather than being reserved only as a last desperate measure.

Some people had prescribed rescue medication for prolonged seizures or clusters. The drug, route, dose, timing, and emergency threshold belonged to an individual seizure action plan. Household members, school staff, colleagues, or caregivers used rescue medication only when trained and authorized.

Management also addressed sleep, nutrition, medication access, mental health, injury prevention, driving law, employment or school access, and co-occurring disability. Safety planning was individualized around actual seizure pattern and control rather than treating all people with epilepsy as unable to bathe, cook, swim, work, live alone, have children, or participate in public life.

Seizure First Aid and Emergencies

For a convulsive seizure, a bystander stayed with the person, timed the event, cleared nearby hazards, cushioned the head, loosened restrictive clothing around the neck, and turned the person onto the side when safely possible. The bystander did not restrain the person, put anything in the mouth, or offer food or drink until the person was fully alert. Afterward, the person was allowed to recover with privacy, calm communication, and breathing observation.

Emergency services were indicated when a convulsive seizure lasted longer than five minutes, another seizure began before recovery, breathing or waking remained difficult, the person was injured, the seizure occurred in water, it was the person’s first known seizure, or an individual action plan required emergency response. Pregnancy and diabetes with loss of consciousness also lowered the threshold for emergency evaluation.

Status epilepticus was prolonged or repeated seizure activity with risk of lasting harm. The ILAE treatment threshold was approximately five minutes for generalized tonic-clonic status, ten minutes for focal status, and ten to fifteen minutes for absence status. Treatment began at the operational threshold rather than waiting for biological injury to become certain.

Course, Prognosis, and Complications

Course ranged from an age-dependent syndrome that remitted to lifelong recurrent seizures. Some people became seizure-free with the first medication; others required combination treatment, surgery, neurostimulation, or continuing support for drug-resistant epilepsy. Prognosis depended on the epilepsy type and cause rather than seizure appearance alone.

Complications included falls, burns, drowning, fractures, aspiration, motor-vehicle injury, medication effects, and status epilepticus. Restrictions imposed without reference to a person’s actual control and support could also produce social, educational, financial, and psychological harm.

Sudden unexpected death in epilepsy (SUDEP) referred to a sudden death in a person with epilepsy that was not explained by trauma, drowning, status epilepticus, or another identified cause. Risk was highest with ongoing generalized tonic-clonic seizures, especially frequent or nocturnal seizures. Medication adherence, seizure control, and individualized nighttime planning could reduce risk, but no measure eliminated it. SUDEP risk did not establish the cause of an unexplained death without appropriate investigation; Levi Russell’s death in sleep remained of undetermined cause.

Historical Context and Medical Evolution

Ancient records described recognizable seizure patterns while often attributing them to supernatural forces. Hippocrates argued in the fifth century BCE that epilepsy arose in the brain. Effective pharmacological treatment began with potassium bromide in 1857, followed by phenobarbital in 1912 and phenytoin in 1938. EEG, modern neuroimaging, genetics, specialist epilepsy centers, newer medications, surgery, and neurostimulation progressively improved classification and treatment.

Medical progress did not end coercion or stigma. People with epilepsy were excluded from schools and employment, confined in institutions, barred from marriage, and targeted by eugenic sterilization laws. Older records frequently treated seizures as moral failure, possession, intoxication, intellectual incapacity, or deliberate behavior.

By the series period, legal protections and specialist treatment coexisted with persistent barriers. Medication cost, prior authorization, transportation, rural geography, language access, racism, diagnostic overshadowing, and police interpretation of altered consciousness could all shape whether a person received safe care.

Associated Characters

Adelina Pérez

Adelina had atypical focal epilepsy with neurosensory hypersensitivity. By thirteen, increasingly violent seizures and mobility loss had continued despite evaluations by seven neurologists across Honduras and Guatemala. Logan Weston recognized the atypical pattern after reviewing her scans and records through a Spanish-language virtual consultation; the Pérez family relocated to Baltimore in 2050 for specialist care.

Andy Davis

Andy had epilepsy alongside cerebral palsy, autism, sensory disabilities, sleep apnea, and chronic pain. Stress increased his seizure activity, and worsening seizures and exhaustion contributed to his family’s decision to withdraw him from Pasadena High School in fall 1995. The Matsuda-Davis Homeschool Cooperative built rest and medical flexibility into his education.

Andy’s care was affected by medical racism and by the danger that his motor and speech differences or postictal state could be misread by emergency personnel or police. His father, Marcus Davis, taught first aid and emergency preparedness within the cooperative. Andy experienced tonic-clonic seizures during the 1995 school and Cody crises.

Tonic-clonic seizures were his predominant presentation. They involved loss of consciousness, rigidity, and convulsive jerking, generally lasting one to three minutes, followed by confusion, exhaustion, and sometimes hours of sleep. He also had focal seizures lasting seconds to about a minute, with awareness preserved in some events and impaired in others. Daily Tegretol (carbamazepine) caused drowsiness, dizziness, and coordination difficulties for Andy without eliminating stress-related breakthrough seizures.

Caleb Ross

Caleb had Lennox-Gastaut syndrome, with multiple seizure types and substantial daily support needs. He used AAC and a wheelchair and required ongoing monitoring and treatment. After Caleb and Jess Ross moved to Baltimore in March 2038, he slept better, had fewer seizures, and regained his usual engagement.

Chrissie Williams

Chrissie had epilepsy involving more than one seizure type. Harmony House staff had dismissed her seizures as manipulation; after the 1994 investigation and reform restored medical attention and a scheduled rest period, her seizure frequency declined.

In later adulthood, Chrissie’s household access included an emergency button, remote camera monitoring, and a nighttime seizure monitor. She could follow practiced safety steps, while medication management, medical decisions, and unexpected emergencies required support.

Cody Matsuda

Cody developed post-anoxic epilepsy after his 1995 fluoxetine overdose caused a seizure, cardiac arrest, and anoxic brain injury. The same injury caused acquired motor apraxia of speech. Epilepsy management occurred alongside ME/CFS, depression, PTSD, autism, and the communication access he used after becoming nonspeaking.

Edward Pennington

Edward lived with historically difficult-to-manage epilepsy, including auras and substantial postictal fatigue and disorientation. At twenty-four, he survived a catastrophic intracranial bleed. In summer 2021, a severe tonic-clonic seizure led to admission during a dangerous intracranial-pressure crisis. Medical therapy did not lower the pressure sufficiently, and he received a permanent VP shunt at Johns Hopkins Hospital.

Main article: Edward Pennington VP Shunt Surgery (Summer 2021) - Event

Heather Moore

Heather had epilepsy alongside cerebral palsy and autism and did not have an intellectual disability. She and Andy spoke about their shared experience of cerebral palsy and epilepsy after meeting at a Matsuda family dinner in 1995.

Isaiah Morales

Isaiah had epilepsy and POTS after years of delayed or misattributed diagnosis. His care included consistent medication, hydration, nutrition, attention to seizure threshold, and management of orthostatic symptoms. Logan treated both conditions while Isaiah and his mother rebuilt trust in medical care.

Jace Makani

Jace developed a post-traumatic seizure disorder after Mike Watson pushed him down concrete steps on October 18, 2045, after Jace punched Mike while protecting Amber. He struck the back of his head, lost consciousness, began seizing during Amber’s emergency call, experienced recurrent seizures before stabilization, and remained in a natural coma for nine days. The severe TBI also caused chronic migraine, fatigue, cognitive and emotional-regulation changes, and visual, balance, and spatial-processing effects.

Jacob Keller

Main article: Jacob Keller (Epilepsy and Seizure Management)

Jacob had combined generalized and focal epilepsy with a predominantly generalized early-life profile. Myoclonic and generalized tonic-clonic seizures began in late infancy while he remained in Chloe and Ben’s care. His epilepsy came through Ben’s family line, although Ben himself did not have epilepsy. Absence seizures became conspicuous in childhood; focal seizures with preserved or impaired consciousness emerged later. Foster placements misread absence events as inattention and myoclonic jerks as clumsiness, while the age-thirteen tonic-clonic seizure that sent him down a staircase was the first event adults in foster care unmistakably recognized.

Julia Weston completed the comprehensive evaluation when Jacob was seventeen. Management included medication, a medical alert bracelet, trained support, and a vagus nerve stimulator implanted in his forties. Lamotrigine served both seizure control and bipolar treatment but required attention to its potential to aggravate myoclonic seizures; levetiracetam had caused severe behavioral effects. Medication and device choices also had to account for cognition, mood, tremor, and his fine-motor work as a pianist.

At the piano, an absence seizure could create an interruption he did not perceive, while a myoclonic jerk could displace or repeat a note. A focal hand seizure ended a two-handed piece because he could not spontaneously redistribute an unprepared score. Logan Weston served as his neurologist and medical advocate, and Elliot Landry coordinated daily medication and seizure response.

During the 2038 flight to Puerto Rico, sensory overload, migraine, disrupted sleep, and travel preceded a focal impaired-awareness seizure approximately ninety minutes after takeoff. The seizure lasted about ninety seconds and was followed by confusion, nausea, headache, and profound fatigue. Elliot and Logan kept Jacob seated and safe, timed the event, informed cabin staff of his established plan, and oriented him without requiring immediate speech or recall.

Jeremiah II

Main article: Jeremiah II

Jeremiah had epilepsy and experienced severe migraines. His seizures were infrequent but could involve forceful muscle spasms and left him profoundly exhausted. His postictal return to full responsiveness was slow; he often needed to rest or sleep before becoming fully responsive. He vomited after approximately half of his seizures.

On the morning Jordan returned home during his first college winter break in 2025, Jeremiah had his first seizure in almost a year while eating breakfast. Scarlet recognized a shift in his gaze as one of his outward seizure signs. He could still hear and respond for a few seconds, allowing him to help get himself down. He vomited afterward, bringing up his recently eaten breakfast. After sleeping, he remained queasy and worn out, with his hands still shaking slightly.

Jeremy Wallace

Jeremy developed generalized post-anoxic epilepsy after depression and severe self-neglect caused life-threatening malnutrition, dehydration, cardiac arrest, and anoxic brain injury on June 17, 1998. He did not intend to die. A seizure during his approximately three-week hospitalization marked the onset of the epilepsy. Later auras, fatigue, migraines, sensory intolerance, and antiseizure-medication fog affected his return to school.

Julian Reyes

Julian had focal epilepsy beginning in childhood. Seizure risk, light sensitivity, chronic migraine, POTS, cyclic vomiting syndrome, and fatigue shaped the flexible filming and editing routines he used at Resonance Films.

Abrupt waking could trigger brief focal seizures for Julian. Kayla Rossi therefore woke him gradually and allowed time for him to reach full awareness and functional wakefulness before he was expected to speak, stand, or resume an activity.

Julian also experienced recurrent syncope that was not treated as fully explained by POTS. His epilepsy, autonomic symptoms, and unresolved possibility of a cardiac contributor required the causes of individual losses of consciousness to remain differentiated.

Levi Russell

Levi had recurrent seizures after neonatal Group B streptococcal meningitis caused a significant brain injury. His record did not specify a formal epilepsy type. He died in his sleep around 1992 at approximately eighteen; the precise cause was never established.

Mateo Garcia

Mateo had refractory epilepsy despite treatment. Seizures and recovery periods disrupted school and compounded his disabling fatigue. He used a power wheelchair in public for energy conservation and mobility; a freshman-year school seizure occurred during a broader decline in his mental health.

Minjae Lee

Minjae had drug-resistant epilepsy and multiple seizure types from childhood, including drop seizures and episodes of status epilepticus. Logan recognized the LGS pattern during the post-Rome health crisis, and Johns Hopkins confirmed Lennox-Gastaut syndrome after the family’s early-2034 move. A full postural harness reduced his risk of falling forward or sideways from his wheelchair during drop seizures. Seizure safety interacted with cerebral palsy, POTS, gastroparesis, developmental disability, and severe chronic fatigue. His family adjusted therapy, walking, music, and travel around medical stability and seizure risk.

Sofia Medina

Sofia had epilepsy alongside Down syndrome, obstructive sleep apnea, hypothyroidism, vision impairment, and hearing loss. Fatigue could lower her seizure threshold. Claudia Medina managed medication, appointments, CPAP equipment, and other daily support.

Victor Amaya

Victor’s 2003 assault caused diffuse axonal injury, hypoxia, and a left frontotemporal hemorrhage requiring decompressive craniotomy. His post-traumatic seizures began focally, often with impaired consciousness and language disruption, and could progress into bilateral tonic-clonic seizures.

Recovery could last hours and include confusion, limited speech, profound fatigue, and temporarily increased right-sided weakness. Stable antiseizure medication reduced events to approximately two to four each year; missed doses, dehydration, illness, and sleep loss increased risk.

Noah Reynolds

Noah Reynolds, Tasha Reynolds’s son, was autistic, had an intellectual disability and epilepsy, and communicated without speech using AAC. Tasha learned his seizure patterns, managed his medication schedule, and responded to breakthrough episodes.

Daily Life and Accessibility

Useful access depended on the person’s seizures and the tasks involved. It could include flexible attendance, rest after seizures, medication storage, a private recovery space, recorded instruction, remote participation, reduced night or shift work, transportation support, bathing or swimming precautions, protective headgear for frequent drop seizures, trained responders, or permission to carry rescue medication and neurostimulation magnets.

Communication access remained essential during and after seizures. A person who could not speak, follow commands, remember the event, or process questions was not necessarily intoxicated, aggressive, intellectually disabled, or refusing care. Supporters used the person’s established communication methods and avoided demanding an immediate narrative during postictal recovery.

Driving rules varied by jurisdiction and seizure history. Licensing restrictions could protect public safety while also restricting employment, health care, education, and community access in places without usable transportation. A diagnosis alone did not determine a person’s capacity for every activity.

Medical-System Interactions

Seizures were vulnerable to diagnostic overshadowing. Absence or focal seizures could be labeled inattention, psychiatric behavior, manipulation, intoxication, autism, or intellectual disability. Conversely, syncope, functional seizures, migraine, and metabolic events could be treated as epilepsy without adequate evaluation.

Race, language, poverty, institutionalization, and communication disability affected whose event descriptions were believed and who reached an epileptologist, prolonged EEG, epilepsy-protocol MRI, genetic testing, surgery evaluation, or newer treatment. Police and emergency responders could mistake a postictal person for someone resisting commands, creating particular danger for Black and multiply disabled people.

Public and Community Context

Epilepsy communities used person-first language, identity-first language, and the word ‘’epileptic’’ in different ways. No single preference represented everyone. Public education emphasized that epilepsy was not contagious, a person could not swallow the tongue during a seizure, restraint and objects in the mouth caused harm, and not every seizure was convulsive.

Advocacy also challenged the assumption that safety required total dependence. Informed risk assessment, accessible environments, reliable medication, trained support, and transportation often expanded participation more effectively than blanket exclusion.

Sources

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