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What are epileptic spasms?

Author

David Mack

Published May 20, 2026

Epileptic spasms involve a sudden flexion, extension, or mixed flexion-extension movement of the proximal and truncal muscles, lasting 1 to 2 seconds, and occur in clusters shortly after waking.

Also question is, what do epileptic spasms look like?

The spasms look like a sudden stiffening of muscles, and the baby's arms, legs, or head may bend forward. The seizures occur in a series of short spasms, about one to two seconds in length. Babies may have as many as 100 spasms a day. The seizures may be more likely to happen just as the baby is waking up.

Furthermore, are epileptic spasms seizures? Epileptic spasms have been described as a paroxysmal epileptic seizure type that consists of a series of motor movements, involving sudden flexion or extension predominantly of axial and/or proximal limb muscles, occurring with a noticeable periodicity, outside the age of infantile spasms, but have otherwise not been

Secondly, what is the difference between a spasm and a seizure?

An epileptic spasm is a sudden flexion, extension or mixed flexion-extension of proximal and truncal muscles, lasting 1-2 seconds i.e. longer than a myoclonic jerk (which lasts milliseconds) but not as long as a tonic seizure (which lasts > 2 seconds). Spasms typically occur in a series, usually on wakening.

How do infantile spasms start?

Infantile spasms (also called West syndrome) can be caused by brain malformations, infections, brain injury, or abnormal blood vessels in the brain. IS also can happen in babies with certain metabolic and genetic disorders. In rare cases, a baby's infantile spasms are caused by vitamin B6 deficiency.

Related Question Answers

What are the 3 types of seizures?

The different types of generalized seizures are:
  • absence seizures (formerly known as petit mal)
  • tonic-clonic or convulsive seizures (formerly known as grand mal)
  • atonic seizures (also known as drop attacks)
  • clonic seizures.
  • tonic seizures.
  • myoclonic seizures.

What is Doose Syndrome?

Myoclonic astatic epilepsy (MAE), also known as Doose syndrome, is an epilepsy syndrome of early childhood, most commonly appearing between ages 1 and 5 and featuring generalized seizures. Children will experience drop attacks and staring seizures, sometimes associated with falls.

What is a hyperkinetic seizure?

Focal hyperkinetic seizure - this seizure type involves movements of proximal limb or axial muscles, producing irregular large amplitude movements, such as pedaling, pelvic thrusting, jumping, thrashing and/or rocking movements.

Is it normal to have muscle spasms after a seizure?

A person having a myoclonic seizure experiences a sudden increases in muscle tone as if they have been jolted with electricity. The mechanism is similar to a myoclonic jerk, the sudden spasm occasionally experienced by people as they are falling asleep.

What is tonic spasm?

Tonic spasms are characterized by sudden onset of dystonic postures, either unilateral or bilateral, with typically short-lasting tonic attacks that, in certain occasions, are triggered by voluntary movements, sensory stimulation or hyperventilation.

What happens if infantile spasms are left untreated?

Left untreated, infantile spasms can lead to serious outcomes, including an estimated infant mortality rate of between 5% and 6%. The most significant concern, however, is that infantile spasms are associated with autism and intellectual deficits that permanently affect quality of life.

What are the first signs of a seizure?

What are the symptoms of a seizure?
  • Staring.
  • Jerking movements of the arms and legs.
  • Stiffening of the body.
  • Loss of consciousness.
  • Breathing problems or stopping breathing.
  • Loss of bowel or bladder control.
  • Falling suddenly for no apparent reason, especially when associated with loss of consciousness.

Is a myoclonic jerk a seizure?

Myoclonic epilepsy causes the muscles in the body to contract. This type of seizure causes quick jerking movements. Myoclonic seizures often happen in everyday life. This includes hiccups and a sudden jerk while falling asleep.

What is the best treatment for convulsion?

Doctors often recommend psychological therapies, such as cognitive behavioral therapy, to help treat non-epileptic seizures. These treatments help a person manage the underlying stress causing the seizures.

What does myoclonic seizure look like?

Myoclonic (MY-o-KLON-ik) seizures are brief, shock-like jerks of a muscle or a group of muscles. "Myo" means muscle and "clonus" (KLOH-nus) means rapidly alternating contraction and relaxation—jerking or twitching—of a muscle. Usually they don't last more than a second or two.

What is Jacksonian seizure?

A Jacksonian seizure is a type of focal partial seizure, also known as a simple partial seizure. This means the seizure is caused by unusual electrical activity that affects only a small area of the brain. The person maintains awareness during the seizure. Jacksonian seizures are also known as a Jacksonian march.

What are the 2 main types of epilepsy?

Types of Seizures
  • Seizures are generally described in two major groups: generalized seizures and focal seizures.
  • The difference between types of seizures is in how and where they begin in the brain.

What should you not do during a tonic clonic seizure?

Do not hold the person down. You may injure the person or get injured yourself. Do not put any object in the person's mouth. The tongue cannot be swallowed during a seizure, yet you could get hurt.

What is a atonic seizure?

Atonic seizures are a type of seizure that causes sudden loss of muscle strength. These seizures are also called akinetic seizures, drop attacks or drop seizures. The sudden lack of muscle strength, or tone, can cause the person to fall to the ground. The person usually remains conscious, and may not always fall down.

Is twitching in sleep a seizure?

Nocturnal seizures: Everything you need to know. Nocturnal seizures are seizures that happen while a person is asleep. They can cause unusual nighttime behavior, such as waking for no reason or urinating while sleeping, as well as jerking and shaking of the body.

What is the difference between infantile spasms and seizures?

An infantile spasm is a seizure with sudden stiffening of the body and brief bending forward or backward of the arms, legs and head. Each seizure lasts only a second or two and usually in a series. Seizures are most common just after waking up and rarely occur during sleep.

How can you tell if an infant is having a seizure?

What are the symptoms of a seizure in a child?
  1. Staring.
  2. Jerking movements of the arms and legs.
  3. Stiffening of the body.
  4. Loss of consciousness.
  5. Breathing problems or stopping breathing.
  6. Loss of bowel or bladder control.
  7. Falling suddenly for no apparent reason, especially when associated with loss of consciousness.

What are the symptoms of tonic clonic seizure?

Tonic-clonic seizures
  • tonic stage – you lose consciousness, your body goes stiff, and you may fall to the floor.
  • clonic stage – your limbs jerk about, you may lose control of your bladder or bowel, you may bite your tongue or the inside of your cheek, and you might have difficulty breathing.

What is the best drug for myoclonic seizures?

Anticonvulsants. Drugs used to control epileptic seizures have proved helpful in reducing myoclonus symptoms. The most common anticonvulsants used for myoclonus are levetiracetam (Keppra, Elepsia XR, Spritam), valproic acid, zonisamide (Zonegran) and primidone (Mysoline).

How do I know if I have infantile spasms?

Symptoms of Infantile Spasms (IS)
  1. Raise their arms over their head or stick their arms straight out to the side.
  2. Stiffen their legs or "tuck them into the belly," as if having stomach pain.
  3. Suddenly bend at the waist.
  4. Drop or bob their heads briefly.
  5. Roll their eyes back suddenly with subtle head nodding.

Why does it feel like my baby is having spasms?

Infantile spasms is a disorder caused by a brain abnormality or injury that can occur before or after birth. According to the Child Neurology Foundation, 70 percent of infantile spasms have a known cause. Causes may include things like: brain tumors.

Are infantile spasms an emergency?

As we continue to navigate the COVID-19 pandemic, it's critical to remember infantile spasms are still medical emergencies that need urgent care. Any delay in seeking emergency treatment can increase your child's risk for brain damage.

Can infantile spasms go away on their own?

The sooner your little one starts treatment for infantile spasms or West syndrome, the better, because this condition can affect how their mind and body develop. In some cases, the seizures and spasms will stop on their own, but most children will need treatment.

Does an EEG show infantile spasms?

Doctors often confirm the diagnosis of infantile spasms with an electroencephalogram (EEG) test. An EEG shows a specific type of abnormal chaotic brainwave pattern called hypsarrhythmia.

How do you know if you have West syndrome?

The diagnosis of West syndrome is made on a combination of the clinical features together with a typical EEG. The EEG shows a very disorganised pattern, called hypsarrhythmia. The EEG is always abnormal in children with West syndrome but sometimes the abnormality is seen only during sleep.

What does Sandifer Syndrome look like?

In a typical attack of Sandifer syndrome, a baby's back will arch suddenly. With their back flexed, their head and legs also splay out backward. They become stiff. Other expressions of the syndrome include nodding head movements, twisting or tilting of the head, or thrashing limbs.

Do infantile spasms happen everyday?

Very occasionally, only one spasm will occur at a time. In between clusters of spasms many hours without spasms can occur. Occasionally more than a day will pass without a cluster of spasms. Clusters of spasms often occur after waking from sleep, whatever time of the day.

What can mimic infantile spasms?

Benign myoclonus of infancy and benign myoclonic epilepsy of infancy are disorders that are sometimes confused with infantile spasms. The age of onset in both disorders is also similar to infantile spasms and the best way to differentiate the two from infantile spasms is with an EEG.