Generalized Seizures

Generalized seizures occur when abnormal electrical activity spreads across both hemispheres of the brain simultaneously. Unlike focal seizures, which start in one area, generalized seizures involve widespread brain activity from the onset and often affect consciousness.

They are commonly associated with epilepsy, a neurological condition characterized by recurring seizures, but can also occur due to other medical conditions or triggers.

There are several types of generalized seizures, each with distinct symptoms:

• Absence seizures – brief lapses in awareness, often seen in children
• Tonic-clonic seizures – involve stiffening (tonic phase) followed by rhythmic jerking (clonic phase)
• Myoclonic seizures – sudden, brief muscle jerks
• Atonic seizures – sudden loss of muscle tone, leading to falls
• Tonic seizures – muscle stiffening without jerking
• Clonic seizures – repetitive jerking movements

Symptoms of generalized seizures can vary depending on the type but may include:

• Loss of consciousness
• Muscle stiffening or jerking movements
• Sudden staring spells
• Brief confusion after the event
• Loss of muscle tone or falls
• Unusual sensations or behaviors before a seizure (called an aura, though this is less common)

Generalized seizures may be caused by a variety of factors, including:

• Genetic predisposition or inherited conditions
• Brain injury or trauma
• Infections affecting the brain
• Stroke or other neurological disorders
• Metabolic imbalances (such as low blood sugar)
• Drug or alcohol withdrawal

Risk factors include a family history of seizures, developmental disorders and certain medical conditions affecting the brain.

Diagnosing generalized seizures involves a comprehensive neurological evaluation. Specialists may use:

• Medical history and symptom review
• Neurological examination
• Brain imaging such as MRI or CT scans
• Electroencephalogram (EEG) to measure brain activity

These tools help determine seizure type, frequency and underlying causes to guide treatment.

Treatment for generalized seizures focuses on controlling seizures and addressing underlying causes. Options may include:

• Anti-seizure medications to reduce or prevent episodes
• Lifestyle modifications, such as sleep management and avoiding triggers
• Neuromodulation therapies like vagus nerve stimulation (VNS) or responsive neurostimulation (RNS)
• Dietary therapies in select cases

For individuals with drug-resistant epilepsy, advanced therapies and surgical options may be considered.

If not well controlled, generalized seizures can lead to complications such as:

• Injuries from falls or convulsions
• Difficulty with daily activities
• Cognitive or memory issues
• Increased risk of status epilepticus (a prolonged seizure emergency)

While not all generalized seizures can be prevented, risk can be reduced by:

• Taking medications as prescribed
• Managing underlying health conditions
• Avoiding known seizure triggers (such as sleep deprivation or alcohol)
• Maintaining regular medical follow-up

If you or a loved one experiences symptoms of generalized seizures, early evaluation is important. Baptist Health Brain & Spine Care offers advanced diagnostic tools and personalized care plans to help manage seizures effectively.

To schedule a visit with a Baptist Health Brain & Spine Care provider, fill out an appointment request form or call 833-596-3876.