What Is Epilepsy? Symptoms, Types, Causes, and Treatment

Epilepsy, commonly referred to as a seizure disorder , results from abnormal electrical activity in the brain and causes recurrent seizures . This chronic neurological condition can cause changes in awareness, involuntary muscle movements such as contractions or shaking, and altered sensory perceptions during seizures. Seizures may last from a few seconds to a few minutes, and people generally lead healthy lives between seizures. Epilepsy is not contagious , and with appropriate treatment, many people with epilepsy can continue their normal daily lives. This article explains epilepsy, its types, symptoms, causes, triggers, and treatments in plain language. It also offers advice on living with epilepsy and answers frequently asked questions.

What Is Epilepsy?

Epilepsy is a condition characterized by seizures resulting from abnormal electrical discharges in the brain's nerve cells, or neurons. A diagnosis of epilepsy usually requires two or more seizures . Having a single seizure does not immediately mean that someone has epilepsy unless another reason supports the diagnosis. Epileptic seizures may involve loss of consciousness or impaired awareness, muscle contractions, involuntary movements, and sometimes sensory hallucinations, such as perceiving unusual smells or sounds. After a seizure, people generally do not remember what happened and may briefly feel dazed or tired. Epilepsy is usually a long-term, chronic condition, but appropriate treatment can largely control seizures and enable people to lead a normal life .

Types of Epilepsy

Epilepsy is divided into different types according to the area of the brain affected and the type of seizure. Seizures are broadly classified as focal (partial) or generalized . Focal seizures begin in a specific area of the brain, whereas generalized seizures affect both hemispheres at the same time. The table below lists the most common types of epileptic seizures and their features:

Note: Seizures can differ from one person with epilepsy to another. Some people experience only one type, while others have several seizure types. Correctly identifying the seizure type is important for planning treatment.

What Are the Symptoms of Epilepsy?

Epilepsy symptoms mainly occur during seizures. Symptoms may vary according to the type of seizure and the part of the brain affected. Some seizures cause very mild symptoms, while others produce obvious, severe symptoms. Common symptoms of epilepsy include:

• Loss of consciousness or impaired awareness: During a seizure, a person may be unaware of their surroundings or lose consciousness completely. Simple absence seizures involve a lapse lasting a few seconds, whereas tonic-clonic seizures may cause loss of consciousness lasting minutes.
• Muscle contractions and shaking: Sudden involuntary muscle contractions and shaking affecting part or all of the body are among the most noticeable signs of a seizure. During tonic-clonic seizures in particular, the whole body alternates between contraction and relaxation, producing convulsive movements.
• Sudden falls or collapse: In some seizures, such as tonic-clonic or atonic seizures, the person may lose muscle control and fall. Injuries can occur during the fall.
• Clenched teeth and tongue biting: People having a severe seizure may experience jaw clenching, with the teeth held tightly together, and may unintentionally bite their tongue. These are common physical signs of a seizure.
• Foaming at the mouth: Muscle contractions may cause frothy saliva to come from the mouth, particularly during generalized seizures.
• Fixed staring or rapid blinking: During some seizures, the eyes may become fixed on one point, blink rapidly, or move from side to side. A blank stare is typical of absence seizures.
• Urinary incontinence: During some severe seizures, bladder control may be temporarily lost, leading to involuntary urination.
• Sensory changes (aura): Some people with epilepsy experience warning signs called an aura before a major seizure. An aura is actually a small focal seizure, usually experienced as a sudden unusual sensation. For example, an unexplained feeling of fear or déjà vu, an unusual smell or taste, flashes of light, or a buzzing sound in the ears may be signs of an aura. An aura can give the person a few seconds of warning that a seizure is coming.

Symptoms generally end when the seizure stops. In the period after a seizure , a person may feel exhausted, tired, and confused and need a few minutes to recover. Epilepsy symptoms are therefore linked to seizures and can occur in different combinations in each person. If someone repeatedly experiences the symptoms described above, prompt medical evaluation for epilepsy is important.

What Causes Epilepsy?

There is no single cause of epilepsy; many different factors can cause it or increase the risk. In some cases, an underlying cause can be clearly identified, but no clear cause is found in approximately half of cases (these forms are called idiopathic epilepsy ). The main known causes of epilepsy include:

• Genetic susceptibility: People with a family history of epilepsy may have a somewhat higher risk of developing it. Some rare forms are associated with specific genetic syndromes. In most cases, however, epilepsy is not directly inherited; it is not inevitably passed from parent to child, although a susceptibility may be present.
• Brain injury around birth: A lack of oxygen to the baby's brain during a difficult or complicated delivery, birth trauma, or bleeding in the brain during the newborn period may predispose a person to epilepsy later in life.
• Serious head injuries: Accidental head injuries, concussion, or blows that damage brain tissue can lead to epileptic seizures. For example, epilepsy may develop even years after a road accident or a fall from a height.
• Brain tumors or lesions: Benign or malignant tumors in the brain can affect brain tissue and cause epileptic seizures. A structural cause, such as a tumor, is investigated particularly when epilepsy begins in adulthood.
• Cerebrovascular disease (stroke): Damage resulting from a stroke, bleeding in the brain, or a blocked cerebral blood vessel can cause epileptic seizures. A significant proportion of new epilepsy cases in middle-aged and older adults involve a history of stroke.
• Infections: Infections that cause inflammation of the brain or its surrounding membranes, such as meningitis, encephalitis (inflammation of the brain), can leave permanent damage and lead to epilepsy. Severe infections accompanied by a high fever, particularly in children, can sometimes cause convulsions and recurrent seizures.
• Developmental disorders: Epilepsy is common in certain neurodevelopmental or genetic conditions, including autism spectrum disorder, neurofibromatosis, and tuberous sclerosis.
• Other causes: Vascular malformations in the brain, progressive neurological diseases, types of dementia such as Alzheimer's disease in older adults, and brain injury associated with very high blood pressure, as in eclampsia, may trigger epilepsy. Certain metabolic problems, such as very low blood sugar or electrolyte imbalances, may also lower the seizure threshold and cause epilepsy-like seizures.

In summary, epilepsy is a syndrome that may arise from many different causes. When no cause is identified, it is described as epilepsy of unknown cause. Identifying the cause is particularly important for treatment planning. For example, causes such as brain tumors may be treated surgically, whereas genetic susceptibility generally calls for long-term control with medication.

Factors That Trigger Epileptic Seizures

Certain external factors can increase the likelihood of seizures in people with epilepsy. These triggersdo not directly cause epilepsy but can bring on seizures in people who already have a predisposition. People with epilepsy are advised to avoid the following potential triggers as far as possible:

• Sleep deprivation and insufficient sleep: Irregular sleeping hours or lack of sleep can adversely affect brain activity and lower the seizure threshold. People with epilepsy have a higher risk of a seizure after a sleepless night.
• Stress and intense excitement: Intense emotional stress, anxiety, or sudden psychological strain can trigger epileptic seizures. Examination stress, pressure at work, or moments of fear or excitement may result in a seizure in some patients.
• Bright or flashing lights: In certain forms, particularly photosensitive epilepsy , intense visual stimuli such as disco lights, rapidly changing images in computer games or on television, and camera flashes may trigger a seizure. People with light-sensitive epilepsy need to be alert to these triggers.
• Alcohol and substance use: Excessive alcohol consumption or certain illicit drugs and stimulants disrupt the brain's balance and trigger seizures. Seizures may occur as the effects of alcohol wear off, for example toward morning after drinking in the evening. In addition, stopping alcohol abruptly increases seizure risk. People with epilepsy should strictly avoid alcohol and illicit drug use.
• Irregular medication use: Not taking prescribed antiseizure medications, missing doses, or stopping them abruptly without medical supervision can cause seizures. Medications taken for other conditions may also interact with epilepsy medications and affect the seizure threshold. All medication changes should therefore be discussed with a doctor.
• Hormonal changes: In some women, hormonal fluctuations such as those during menstruation may affect seizure frequency. Seizures may also increase during pregnancy, childbirth, or the transition to menopause, when hormone levels change. Medical monitoring allows medication doses to be adjusted if necessary during these periods.
• Fever and infections: High fever, particularly in children, may cause seizures called febrile convulsions (fever-associated seizures). Severe infections or high fever can also lower the existing seizure threshold in people with epilepsy. During illness, drinking plenty of fluids, resting, and controlling fever as recommended by a doctor are important.
• Extreme fatigue and hunger: Overexertion, physical exhaustion, or going without food for a prolonged period, resulting in low blood sugar, may trigger seizures in susceptible people. People with epilepsy are advised to avoid prolonged fasting and rest after strenuous exercise.
• Loud sounds or sudden stimuli: Very loud noises, sudden frightening sound effects, or similar abrupt sensory stimuli may trigger certain forms of epilepsy, although such cases are quite rare.

Triggers may differ from person to person. Observing what provokes their own seizures over time and trying to avoid those triggers can help people with epilepsy control seizures. Doctors generally advise patients to maintain regular daily habits and avoid triggers.

How Is Epilepsy Diagnosed?

The most important steps in diagnosing epilepsy are taking a detailed medical history and accurately describing the seizures. The doctor relies on the patient's or a relative's account of what happened during a seizure. Observations from someone who witnessed the seizure are therefore particularly valuable. Your doctor may ask: How often do seizures occur, and how long do they last? Does the person experience a warning, or aura, beforehand? Which parts of the body are affected? Is consciousness lost, and what does the person do during the seizure? How do they feel afterward?

This clinical assessment is followed by a neurological examination . Tests are then requested to clarify the diagnosis and investigate the underlying cause:

• EEG (Electroencephalography): This is the test most commonly used to diagnose epilepsy. Electrodes placed on the scalp record the brain's electrical activity. Characteristic abnormal electrical discharges may appear on an EEG in people with epilepsy, particularly during or after a seizure. The test is painless. Even if a routine EEG is normal, a doctor may request a sleep-deprived EEG or prolonged video-EEG monitoring when necessary.
• Brain Imaging (MRI/CT): Magnetic resonance imaging (MRI) provides detailed images of brain structures and can reveal structural problems such as tumors, blocked cerebral blood vessels, or congenital abnormalities. Computed tomography (CT) can provide a rapid brain image in emergencies. These methods help identify underlying causes, particularly in newly developed epilepsy.
• Laboratory tests: Blood tests can investigate conditions that may cause seizures, including infections, low blood sugar, electrolyte disturbances, or other metabolic problems. Particularly after a first seizure, a doctor may perform tests to rule out these temporary causes before diagnosing epilepsy.
• Neuropsychological assessment: If needed, neuropsychological tests can assess cognitive functions such as memory and attention, particularly in people who have had epilepsy for a long time. This helps clarify how epilepsy affects brain function.
• Other investigations: In some situations, genetic tests, particularly for specific childhood epilepsy syndromes, or specialized blood tests may be requested.

During diagnosis, the patient's seizure type and its possible cause are identified so that an appropriate treatment plan can be developed. Although diagnosing epilepsy may seem complex, an experienced neurologist can make the correct diagnosis using the assessments described above. Early diagnosis and treatment are crucial for controlling seizures and maintaining quality of life.

Epilepsy Treatment Options

The aim of epilepsy treatment is to stop seizures completely or reduce them as much as possible while allowing the person to continue normal daily activities. Treatment is individualized according to the type of epilepsy, its underlying cause, and the patient's age and general health. Today, the vast majority of people with epilepsy can control their seizures with appropriate treatment. The main treatment approaches are:

• Medication (Antiseizure Drugs): The foundation of epilepsy treatment is the regular use of antiseizure medications . The doctor starts a medication appropriate for the patient's seizure type, beginning at a low dose and gradually increasing it to find the most effective dose. These medications regulate electrical activity in the brain to prevent seizures. In most patients, a single medication at an appropriate dose can stop seizures completely or reduce them considerably. Treatment is generally long term; patients continue taking medication until they have been seizure-free for at least several years. Medications must be taken regularly and never stopped without medical advice. After years of follow-up, some patients may have their dose reduced and eventually stopped under medical supervision to assess whether the condition has resolved.

• Surgical Treatment: In cases involving drug resistance , where seizures cannot be controlled with medication and seriously affect quality of life, surgery may be considered. Epilepsy surgery is usually used for focal epilepsy originating in a specific brain region. Advanced imaging and EEG techniques identify where seizures begin. If the area can be treated without damaging a critical function, the abnormal tissue or seizure focus can be removed. For example, removing the problematic area in drug-resistant epilepsy originating in the temporal lobe can produce highly successful results. Surgery is not suitable for everyone with epilepsy; a specialist team makes the decision after a detailed assessment.

• Alternative Treatment Approaches: In specific situations or as additional treatments, the following approaches may also be used:

  • Vagus Nerve Stimulation (VNS, an Implanted Stimulator): A battery-powered device is surgically placed in the chest and sends mild electrical impulses at regular intervals to the vagus nerve, which carries signals to the brain. This approach may help reduce seizure frequency in drug-resistant epilepsy. Although VNS does not provide a complete cure, it may reduce seizure severity and frequency by up to 50%.
  • Ketogenic diet: Used particularly in children with certain forms of drug-resistant epilepsy, this is a special diet that is high in fat and low in carbohydrates . It puts the body into a metabolic state called ketosis, which may help reduce seizure activity in the brain. A ketogenic diet must be followed under the supervision of a doctor and dietitian.
  • Deep brain stimulation and other approaches: Certain highly specialized centers may try advanced treatments such as suppressing seizure activity with electrodes implanted in the brain, known as deep brain stimulation. Biofeedback techniques and stress-reducing practices such as meditation and yoga may also be recommended as supportive measures for some patients.

• Lifestyle adjustments: Alongside medical treatment, certain lifestyle changes are an important part of care. Regular sleep, healthy eating, avoiding stress and triggers, and attending regular medical follow-ups are as important as medication in preventing seizures. These topics are discussed in detail in the next section.

The table below summarizes the main epilepsy treatments and their features:

Epilepsy treatment may be long term and requires patience. Medical follow-up is essential: patients should stay in contact with their doctor for dose adjustments, monitoring of side effects, and assessment of alternative treatments when necessary. Most people with epilepsy who receive appropriate treatment and follow medical advice can lead seizure-free lives.

Living with Epilepsy: Precautions and Recommendations

For someone diagnosed with epilepsy, daily precautions and adjustments can make seizure control easier alongside medical treatment. The following are important considerations for people with epilepsy and ways to protect their health:

• Regular sleeping habits: Getting enough good-quality sleep every day helps prevent seizures. Try to go to bed and wake up at the same times whenever possible, and avoid sleep deprivation.
• Stress management: Avoid stress and excessive excitement. Reduce everyday stress through relaxation techniques such as meditation, breathing exercises, or yoga. If necessary, seek support from a psychologist or psychiatrist to learn ways of managing anxiety.
• Taking medication regularly: Take the epilepsy medications prescribed by your doctor regularly and at the correct dose . Do not forget your medication; if you miss a dose, do not try to compensate on your own, but consult your doctor. Renew your prescription before the medication runs out so that treatment is not interrupted.
• Avoiding alcohol and smoking: Alcohol is a major trigger in people with epilepsy. If possible, do not drink alcohol, or at least do not exceed the amount permitted by your doctor. Quitting smoking and other tobacco products is also recommended because they harm overall health. Illicit drugs must be strictly avoided.
• Caution around visual stimuli: If bright or flashing lights trigger your seizures, be cautious in places such as discos and nightclubs, or avoid them. Keep an appropriate distance from television screens or computer games rather than viewing them very closely. Use screen filters if necessary.
• Healthy eating and regular exercise: Eat a balanced diet. Try not to go without food for long periods or allow your blood sugar to fall too low. Avoid excessive caffeine from coffee or energy drinks. Regular light exercise, such as walking or swimming, benefits physical health and reduces stress. However, avoid very strenuous exercise or leaving your body dehydrated and exhausted.
• Regular medical follow-ups: Visit your neurologist at regular intervals. Do not miss follow-up appointments needed to monitor your response to treatment and adjust medication doses if necessary. Your doctor may also request tests, such as liver function tests, to monitor medication side effects.
• Carrying medical identification: Wearing a bracelet or necklace, or carrying a card identifying that you have epilepsy, may help bystanders and medical teams respond appropriately if a seizure occurs.
• Informing people around you: Tell family members, close friends, and trusted people at work or school about your condition. Teach them what to do, and what not to do, during a seizure. An informed support network can help you calmly when a seizure occurs.
• Safety precautions: Avoid being alone during activities such as swimming or working at heights. Small precautions, such as not locking the bathroom door, avoiding excessively hot water, and taking care when using sharp kitchen tools, may prevent accidents during a seizure. Always follow medical advice about driving; this is discussed in the FAQ section below.

These recommendations aim to make living with epilepsy easier and reduce seizure risk. Leading an active, happy life with epilepsy is entirely possible. The key is to accept the condition, take the necessary precautions, and follow your treatment plan.

Frequently Asked Questions

Question 1: Is epilepsy genetic? Can it be passed from parents to children?
Answer: Although some forms of epilepsy involve genetic susceptibility , epilepsy is usually not an inherited condition passed directly from parents to children. A family history may slightly increase the risk, but there is no rule that the child of a parent with epilepsy will definitely develop it. Nevertheless, certain epilepsy syndromes, particularly those beginning in childhood, may be associated with specific gene mutations. If several family members have epilepsy, your doctor may recommend genetic counseling.

Question 2: Can epilepsy be completely cured? Does it last a lifetime?
Answer: With appropriate treatment, many people with epilepsy can live for years without seizures . Some patients may be able to stop medication under medical supervision after treatment and several seizure-free years, with no further seizures, effectively achieving a functional recovery. Certain types begin in childhood and disappear during adolescence. However, each person's situation differs. Some may need medication for life, even at a low dose. There is currently no one-time treatment, such as a magic pill, that definitively eliminates epilepsy, although surgery can provide a lasting solution for some patients. In summary, epilepsy can be controlled with appropriate treatment, allowing a person to live normally without seizures for years.

Question 3: What first aid should I provide during an epileptic seizure?
Answer: When helping someone having an epileptic seizure, first stay calm and take the following steps:

• Help the person into a safe position: Move sharp, hard, or dangerous objects away. If possible, help the person lie on the floor and protect their head from injury by placing something soft, such as a jacket or pillow, underneath it.
• Turn them onto their side: Keep the person lying on their side. This helps keep the airway open and prevents secretions such as saliva or vomit from entering the windpipe.
• Do not put anything in their mouth: Even if you are worried that the person might swallow their tongue, never try to put any object, such as a spoon or cloth, into their mouth. This is an outdated misconception and may damage the person's teeth and jaw muscles. They cannot swallow their tongue, although they may bite it. There is nothing to do about this during the seizure; any necessary care can be provided afterward.
• Loosen tight clothing: Loosen restrictive items such as a tie, scarf, or belt to help the person breathe comfortably. Remove their glasses if they are wearing them.
• Monitor the seizure's duration: Time the seizure to see how long it lasts. If it lasts longer than 5 minutes or the person has repeated seizures one after another, call emergency medical services on 112. Most seizures end within 1-2 minutes, and an emergency call is not necessary during this time; wait for the seizure to stop on its own.
• Stay with them until the seizure ends: Do not leave the person before the seizure ends. They may remain confused or not understand what happened for a while afterward. Give brief explanations in a calm voice, such as, "You had a seizure, and you are safe now," and help them relax. Stay gently by their side until they fully regain awareness.

What not to do: Do not restrain the person's arms or legs during the seizure; this will not stop the contractions and may cause injuries. Do not try to give water, food, or medication, as this could cause choking. Disperse any crowd, allow fresh air, and protect the person's privacy.

Question 4: Can people with epilepsy drive or obtain a driving license?
Answer: Driving with epilepsy is subject to specific rules and medical approval. If seizures are controlled with medication and the person has had no seizures for a certain period, usually at least 1 year, driving may be permitted if the doctor considers it appropriate. According to regulations in Turkey, people who have had a single seizure or have been seizure-free with treatment for at least 1 year may obtain a driving license with a neurologist's report. Every case is individual, of course, and the nature, type, and frequency of seizures are assessed. Driving is unsafe for people with ongoing or uncontrolled seizures, both for their own safety and for that of others. Your doctor will advise you about licensing based on your circumstances. Even if you are approved for a license, you must take your medication regularly and remain seizure-free.

Question 5: Is epilepsy fatal? Can an epileptic seizure cause death?
Answer: An ordinary epileptic seizure on its own is generally not life-threatening, and most people recover fully soon afterward. Epilepsy is not a fatal condition when appropriately managed. However, certain risks exist. Prolonged seizures, calledstatus epilepticus (seizures lasting longer than 5-10 minutes without stopping), may be life-threatening and require emergency medical attention. In addition, secondary accidents such as uncontrolled falls, injuries, or drowning during a seizure can be dangerous. For example, an unconscious person lying face down in water during a seizure may drown, and a seizure in traffic can cause an accident. People with epilepsy should therefore take appropriate precautions. Very rare cases of SUDEP, or sudden unexpected death in epilepsy, associated with seizures during sleep have been reported, but this is extremely uncommon. Overall, most people with epilepsy have a normal life expectancy. Regular treatment and seizure control are essential.

Question 6: Can epileptic seizures occur during sleep?
Answer: Yes, some people with epilepsy have seizures during sleep or while falling asleep. These are called nocturnal seizures . The person may not realize they had a seizure while asleep, but clues can include falling out of bed, bruises from impacts, or wetting the bed; screams or unusual sounds may also be heard during the seizure. Seizures during sleep are usually brief. The person may wake up feeling tired with a headache, or simply wake without understanding what happened. If you suspect seizures during sleep, tell your doctor. An overnight EEG may help clarify the diagnosis if necessary. People with nocturnal seizures are advised to take bedroom safety precautions, such as placing soft cushions beside the bed, and avoid sleeping alone if possible.

Question 7: Which doctor or specialty treats epilepsy?
Answer: The specialty responsible for diagnosing and treating epilepsy is neurology. In adults, a neurologist, a specialist in disorders of the brain and nervous system, manages epilepsy diagnosis and treatment. Children are cared for by a pediatric neurology specialist, or pediatric neurologist. When epilepsy surgery is needed, neurosurgery becomes involved. A dietitian, particularly for children following a special diet, and a psychologist or psychiatrist providing psychological support may also be part of the healthcare team. Someone having a first seizure usually attends the emergency department and is referred to neurology. Follow-up then takes place in the neurology outpatient clinic. If epilepsy is suspected, consulting a neurologist directly is therefore the most appropriate approach.