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By Apollo 24|7, Published on- 15 December 2022 & Updated on -

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  • Symptoms: Staring spell, uncontrollable jerking of the limbs or spasms, brief loss of consciousness or blackout, cognitive distortion, fear, anxiety, temporary confusion, behavioural changes, irregular eye movements, drooling or frothing, loss of bladder or bowel control, mood swings, bitter metallic aftertaste, nausea, vertigo
  • Causes: Irregular sodium or glucose level in the blood, cerebral trauma, brain tumour, drug abuse, brain injury, congenital problems in the brain, electric shock, high fever, heat intolerance, phenylketonuria (PKU), stroke, toxaemia, malignant hypertension, alcohol withdrawal, snake bite, kidney failure, toxin build-up 
  • Risk Factors: Age, family history, head injuries, dementia, stroke or other cardiovascular problems
  • Severity: Mild to severe
  • Which doctor to consult: Neurologist or Epileptologist


A seizure is a sudden imbalance occurring in the brain. It can happen due to uncontrollable electrical impulses within the brain, causing behavioural changes and, in extreme cases, unconsciousness. Patients can suffer mood swings and even a permanent change in their movements due to the disorder.

Seizures can be of various types, depending on their symptoms and severity. Generalised seizures can be categorised into the following types:

  • Absence seizures: Absence seizures are also known as petit mal seizures and can occur during early childhood. Common symptoms of the disorder involve staring into space, eye blinking, and lip-smacking. The attacks can last up to five to ten seconds but frequently happen throughout the day. The attacks can even come in clusters and make the patient unconscious.
  • Atonic seizures: Also known as drop seizures, atonic seizures can cause muscle control loss. As a result, patients tend to collapse rapidly, risking a head injury that can worsen the matter.
  • Tonic seizures: Tonic seizures occur in the arms, legs, and back muscles. These, too, can make an individual unconscious all of a sudden.
  • Clonic seizures: Clonic seizures are defined by their rhythmic pattern and constant muscle spasms. The attack usually affects the face, arms, and neck.
  • Myoclonic seizures: Myoclonic seizures occur in brief spasms or twitches of the arms and legs. However, patients suffering from this disorder do not permanently lose consciousness.
  • Tonic-clonic seizures: Previously called grand mal seizures, tonic-clonic seizures are the most severe of all the types. This is the most common type of seizure in epileptic patients and causes abrupt unconsciousness and body stiffening.

When to Consult a Doctor?

An individual may need to consult a doctor under the following circumstances:

On Experiencing Symptoms: An individual must consult a neurologist whenever he/she feels the oncoming of a seizure attack or has faced them previously. Epileptologists are neurologists with expertise in treating seizure attacks. The doctor may also question family history and medical history before treating the condition.

Medical assistance is mandatory if the patient:

  • Has difficulty breathing 
  • Has a seizure lasting for more than five minutes 
  • Has repetitive seizure attacks 
  • Suffers an injury due to a seizure attack 
  • Becomes unconscious or confused frequently

During Pregnancy: Pregnant women must undergo a seizure diagnosis, especially if she has a history of epilepsy. Patients who suffer from insomnia or sleeplessness, or forget to take their medication, usually suffer more frequently from seizures. Pregnancy can aggravate the condition even more.


Diagnosis is integral to confirming the type of seizure and providing proper treatment. For instance, there are over 20 types of anti-seizure medications available. So, the doctor needs to understand the variety to offer the appropriate remedy. There are also other factors to consider, such as the patient's age and whether he/she suffers from other medical conditions.

Physical Examination: Physical examination involves checking for asterixis, lateral tongue bites, or nuchal rigidity. The neurologist or epileptologist may also check for any signs of bruises if the patient has suffered a sudden fall or injury. Signs of the neurocutaneous syndrome are also reviewed. These symptoms appear on the skin and may cause persistent focal asymmetry and back pain. Urinary incontinence is also checked during the physical examination.

Diagnostic Tests

Neurological Examination: Neurologists check the patient's motor abilities, behaviour, and mental functionality when examining seizures. This can confirm any problem in the nervous system or brain. 
Blood Tests: Blood tests are also conducted on the blood sample collected from the patient. This is done to check the sugar levels in the blood. The tests also confirm any signs of infection or genetic anomaly that may cause the seizure attacks. 
Lumbar Puncture: If the blood tests indicate an infection as the cause of the seizure, the doctor may further acquire a cerebrospinal fluid sample. This test confirms any bleeding in the brain and traces of cord cancers.

Doctors may even test for the inflammatory condition of the nervous system if they suspect it to be an underlying cause of the seizures.

Imaging Tests

Magnetic Resonance Imaging (MRI): An MRI testing is done via powerful magnets and radio waves. The test produces a much more detailed view of the brain. A neurologist can then look for any abnormality in the brain.

Computerised Tomography (CT): Computerised tomography or a CT scan is a type of x-ray of the brain that produces cross-sectional images. A CT scan is also helpful for examining brain abnormalities like cyst formation, tumours, or bleeding.

Positron Emission Tomography (PET): A Positron Emission Tomography or PET test is usually done by injecting small doses of radioactive material into the patient's vein. The low dose of the radioactive element helps highlight the affected areas of the brain that exhibit the abnormalities.

Magnetoencephalography (MEG): Magnetoencephalography (MEG) is a non-invasive diagnostic method that uses magnetic fields to measure the movement of the brain. The electrical currents produced by the brain are projected via the brain mapping function. This helps doctors identify the specific locations of occurrence of epileptic seizures.

Advanced Tests

Electroencephalogram (EEG): An electroencephalogram or EEG is one of the most common imaging tests for testing epilepsy. During this test, electrodes are attached to the scalp, and a paste-like substance is applied. The electrodes then can record the electrical activities occurring within the brain, which is demonstrated as EEG recordings for further study. The test is highly advantageous for understanding the conditions that may cause epileptic behaviour in patients. This test is the most accurate in diagnosing seizures to date.

Single-Photon Emission Computerised Tomography (SPECT): A single-photon emission computerised tomography or SPECT test is similar to the PET test. Like the PET test, a small dose of radioactive materials is injected into the vein. However, in the SPECT test, a 3D mapping of the blood flow activity within the brain is produced. This test, also known as subtraction ictal SPECT, is conducted with an MRI (SISCOM). The result is a high-resolution image that helps localise the areas of seizure occurrence.


Unfortunately, a seizure is a lifelong problem with no permanent cure. But with proper medical care, the severity and frequency of the attacks can be reduced. There are a few treatment methods available for the various types of seizures.

Home Care: Despite routine medical intervention, taking care of patients with seizures at home is essential. The level of care depends on the frequency and severity of the seizure attacks. However, one of the most common precautions the caregivers can take is providing a cushion to protect the head during a collapse.

Medication: Medications such as carbamazepine, valproic acid or Depakene, phenytoin, gabapentin, oxcarbazepine, lamotrigine, zonisamide, and phenobarbital are prescribed commonly in seizure patients. However, patients or caregivers must never self-medicate. Always get diagnosed by a licensed neurologist and only consume prescribed medication according to dosage. Usually, the doses start small, and a doctor may increase the dosage gradually while keeping the attacks within control.

Surgical Treatment

Resective Surgery: Under extreme circumstances, surgery may be the only viable option for treating seizure patients. Among all the surgical treatments available, resective epilepsy surgery is the most common. The doctor removes a small portion of the brain by cutting into the tissue where the seizures may occur. This is done if the doctor suspects a tumour formation or a brain injury. The surgery is performed on the temporal lobe area, which is responsible for controlling emotions, language comprehension, and visual memory.

Laser interstitial thermal therapy (LITT): LITT or laser interstitial thermal therapy is a less invasive surgical procedure. As the name suggests, the process uses a laser that pinpoints and kills a small portion of the brain. The surgery is guided with the help of an MRI.

Corpus callosotomy: Corpus callosotomy surgery allows partial removal of the corpus callosum. This is the part of the brain tissue that connects the nerves on the left and right hemispheres. Usually, this surgery is done on child patients who suffer from brain abnormalities.

Hemispherectomy: A hemispherectomy surgery allows the neurologist or epileptologist to operate on the brain's cerebral cortex. This is also done on child patients who suffer from sudden seizure attacks. The doctor can recommend this procedure if they suspect that the seizure occurrence is on one side of the hemisphere. This surgery effectively treats congenital problems, that is, a seizure disorder occurred at birth.

Deep Brain Stimulation: Deep brain stimulation or DBS is done with the help of electrodes and a neurostimulator device. This is a type of neuromodulation therapy conducted under the supervision of an experienced epileptologist. The process aims at altering the networks within the brain with the help of electrical stimulation.

Functional Hemispherectomy: The procedure removes the connective nerves without damaging the brain. A doctor may prescribe this surgical treatment to control severe seizure attacks in children. However, some risks are involved with this invasive process like loss of movement, loss of visual fluid, and bleeding.

Risk and Complications if Left Untreated

Sudden Unexpected Death in Epilepsy (SUDEP): Persistent seizures can cause many severe problems if not treated promptly. An uncontrolled seizure can sometimes result in epileptic death. SUDEP can be diagnosed through autopsy and toxicology tests and is usually caused by tonic-clonic seizures. The outcome is abnormal muscle spasms and abrupt unconsciousness.

Shoulder Dislocation: Broken bones and shoulder dislocation can be a side-effect of seizures or epilepsy due to the inability to control body movements. In addition, specific medication can also reduce the overall bone mass density, making it difficult for patients to maintain balance.

Aspiration: Aspiration is the ability to draw a substance in or out via suction. This applies to eating, drinking, and even breathing air. Aspiration is a rare abnormality but can even occur in healthy individuals during sleep. Seizure attacks can aggravate this problem and cause a low to moderate risk of aspiration in patients.

Additional Information

Movement disorders vs seizures: Certain involuntary movement disorders (MD) like tics and tremors can be mistaken for a focal or myoclonic seizure. Other disorders that share common symptoms of seizures are Huntington's disease, Parkinson's disease, and Tourette's syndrome. All of these are brain disorders, but their causes and treatments vary.

Nicotine and seizure: There are still controversial results on research done on the impacts of smoking on seizure patients. However, tobacco and nicotine have proconvulsant effects that can disrupt the function of anti-seizure drugs. So, seizure patients are especially recommended not to smoke. 


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Frequently Asked Questions

There are only a few things non-medical persons can do to help a patient having a seizure. Placing a cushion around their neck and under the head to prevent injury is a primary objective. It is also recommended to loosen any tight clothing around their neck and turn them on their side to help reduce the convulsions.

Grand mal seizures or tonic-clonic seizures are the most common and severe type of seizure that causes uncontrolled muscle contraction. It can be fatal when left undiagnosed.

Petit mal or absence seizures are the mildest forms, with brief attacks and shaking movements.