Epilepsy is a neurological disorder characterized by a predisposition of the brain to develop recurrent epileptic seizures. Seizures are caused by temporary disturbances in the electrical activity of the brain and can manifest in different ways, depending on the brain regions and neural networks affected.
A single epileptic seizure does not necessarily mean that a person has epilepsy. The diagnosis of epilepsy is made by a Neurologist following a detailed assessment of the episodes, the patient’s medical history, and the necessary diagnostic investigations.
Symptoms and Manifestations of Epilepsy
Epileptic seizures do not always involve pronounced convulsions. In some cases, they may cause only a brief alteration in awareness or responsiveness, unusual sensations, or repetitive movements.
Depending on the type of seizure, symptoms may include:
- Temporary confusion or disorientation
- Sudden staring and reduced responsiveness
- Loss or alteration of consciousness
- Uncontrolled movements or jerking of the arms and legs
- Muscle stiffness or sudden loss of muscle tone
- Unusual sensations, such as numbness or unusual smells or tastes
- Temporary changes in vision or hearing
- A sudden feeling of fear, anxiety, or déjà vu
- Automatisms, such as repetitive movements of the mouth or hands
- Loss of bladder control and, less commonly, bowel control during certain seizures
Symptoms vary depending on the type of epileptic seizure and the area of the brain in which it begins.
Types of Epileptic Seizures
Epileptic seizures are classified according to how and where they begin in the brain.
Focal seizures begin in a specific area or network of the brain and may occur with or without impairment of awareness.
Generalized seizures involve networks in both hemispheres of the brain from their onset. These include different types of seizures, such as generalized tonic-clonic seizures and absence seizures.
There are also cases in which the onset of a seizure cannot initially be clearly determined. These are classified as seizures of unknown onset.
Causes of Epilepsy
Epilepsy may be associated with a variety of underlying factors.
Depending on the individual case, the cause may be:
- Genetic
- Structural brain damage or abnormalities
- Metabolic disorders
- Infections of the central nervous system
- Immune-related mechanisms
- Unknown causes
Identifying the possible underlying cause is important both for establishing an accurate diagnosis and for selecting the most appropriate treatment.
Diagnosis of Epilepsy
The diagnosis of epilepsy is made by a Neurologist and is based primarily on a detailed description of the episodes and the patient’s medical history.
A description of the seizure provided by someone who witnessed the episode can offer valuable information. When a safe video recording of the episode is available, it may also assist the Neurologist in the assessment.
Diagnostic investigations may include:
Electroencephalogram (EEG): An EEG records the electrical activity of the brain and can help detect epileptiform activity.
Brain Magnetic Resonance Imaging (MRI): Brain MRI is used to identify possible structural abnormalities that may be associated with epileptic seizures.
Laboratory tests: Blood tests or other laboratory investigations may be requested depending on the clinical presentation, particularly when metabolic or other underlying causes need to be excluded.
In certain cases, additional investigations or more specialized EEG monitoring may be required.
Treatment of Epilepsy
The treatment of epilepsy is individualized according to the type of epileptic seizures, the epilepsy syndrome, the patient’s age, the possible underlying cause, other medical conditions, and the individual needs of each patient.
The main treatment approach involves the use of appropriate anti-seizure medications, with the aim of achieving effective seizure control while minimizing potential side effects.
The choice of medication and dosage depends on the type of seizures and the individual characteristics of the patient and requires regular follow-up by a Neurologist.
When epileptic seizures are not adequately controlled despite appropriate medication, further specialized assessment may be necessary to investigate the underlying condition and consider additional treatment options.
Epilepsy Follow-Up and Monitoring
The management of epilepsy is not limited to medication alone. Regular neurological follow-up is important for assessing seizure frequency, treatment effectiveness, and possible medication-related side effects.
It is also important to identify factors that may increase the likelihood of seizures, such as sleep deprivation, missed doses of medication and, in some individuals, excessive alcohol consumption.
The goal of modern epilepsy management is to achieve the best possible seizure control while maintaining patient safety and the highest possible quality of life.