Seizures | Symptoms & Causes
What are the symptoms of a seizure?
A child may have a wide variety of symptoms depending on their type of seizures. Some seizures are easy to recognize through signs like shaking or temporarily losing consciousness. Other seizures are so mild that you might not even recognize them as seizures: They might involve only a visual hallucination, for example, or a moment of very strong emotions. In some cases, seizures have no outward signs at all.
Some signs that your child may be experiencing seizures include:
- staring
- tremors, convulsions, or jerking movements in the arms and legs
- stiffening of the body
- loss of consciousness
- breathing problems
- loss of bowel or bladder control
- falling suddenly for no apparent reason
- not responding to noise or words for short periods of time
- appearing confused or in a haze
- extreme sleepiness and irritability when waking up in the morning
- head nodding
- periods of rapid eye blinking and staring
- vomiting
- changes in vision, speech, or both
Sometimes these symptoms can have a cause other than seizures. Further testing will help doctors confirm suspected seizures or find another condition that is causing the symptoms.
Seizures don’t necessarily harm the brain, but some seizures do cause damage. The side effects of seizures, such as dramatic changes in behavior and personality, may remain even when your child isn’t actually having a seizure. In some cases, seizures are associated with long-term neurological conditions and problems with learning and behavior.
During the seizure itself, children may fall or get injured. It’s important to stay with your child during a seizure. Gently ease the child to the floor if sitting or standing, turn them on their side in case of vomiting and remove any surrounding hard objects. Seizures may leave your child exhausted. Unfortunately, just as troubling as the physical complications, seizures can also cause embarrassment and social isolation.
What causes seizures in children?
Seizures can take a wide variety of forms, depending in part on what part of the brain has the abnormal electrical activity. Many different diseases and injuries can cause children to have seizures. These include:
- head injuries
- birth trauma
- congenital conditions (conditions that your child is born with)
- poisoning
- fever or infection
- brain tumors
- maternal illness during pregnancy
- heredity
- degenerative brain disorders
- stroke
- metabolic problems and chemical imbalances in the body
- alcohol or drugs
- medications
Often, however, the exact cause of seizures cannot be determined.
FAQs
Members of the Epilepsy Center at Boston Children's Hospital answer frequently asked questions relative to epilepsy and seizures.
Seizures | Diagnosis & Treatments
How are pediatric seizures diagnosed?
If your child is having seizures, a proper diagnosis relies strongly on your observations of your child’s symptoms. When you meet with a neurologist, you’ll want to be prepared to describe the following:
- What time did the seizure start and stop? (Time it with a watch, if possible.)
- Where in the body did the seizures start? (Hands, arms, legs, eyes?)
- Did the seizure stay in that part of the body or did it move to other areas?
- What type of movement did you see? (Jerking, twitching, stiffness?)
- Is there anything that might have triggered your child’s seizure?
- Did your child experience anything unusual before the seizure started?
- Has there been a change in how often seizures happen or in the type of seizure activity?
Your medical team will first try to distinguish between true seizures and other problems that can look like seizures, such as stroke, fainting, and movement disorders. If your child is indeed having seizures, the next step is to determine where in the brain the seizures are coming from and whether the seizures represent epilepsy or some other disorder. Your child’s physician will use a variety of tests to evaluate seizures, including:
- blood tests, such as blood sugar, complete blood count, electrolytes, and liver and kidney function tests
- electroencephalography (EEG), a test that records electrical activity in your child’s brain using tiny wires attached to the head (EEG is highly sensitive and can pick up even small seizures that don’t lead to physical symptoms.)
- brain imaging tests, including computed tomography (CT or CAT) scan, magnetic resonance imaging (MRI), and PET scans, to look for any scar tissue, tumors or brain malformations that may be causing seizures
- lumbar puncture (spinal tap) to see if an infection might be causing the seizures
Many of these tests can be performed in an outpatient clinic. You may also be offered testing for problems that may accompany seizures, such as learning or behavior difficulties or depression. This may include specialized testing to monitor your child’s cognitive abilities, learning, behavior, emotional well-being and social function.
What are the treatment options for seizures?
If your child is experiencing seizures that are triggered by another disease or injury, specialists experienced in treating that condition will work closely with epilepsy and seizure specialists to provide the best possible care for your child.
An important part of caring for your child is treating not only the seizures themselves, but any complications they may cause. For example, neuropsychologists use specialized testing to monitor your child's cognitive abilities, learning, behavior, emotional well-being, and social function, in order to develop strategies that will help your child function at their highest possible level.
How we care for seizures
Treatments for seizures have expanded greatly in recent years and include a variety of medications, specialized diets, or, in serious cases, a variety of brain surgeries. At Boston Children's Hospital, we care for children who have epilepsy or who have experienced seizures through the Epilepsy Center, Fetal-Neonatal Neurology Program, and many other programs that are dedicated to caring for children with disorders that may cause seizures.
Seizures | Innovation
Our areas of innovation for seizures
Physicians and researchers at Boston Children’s Hospital are constantly looking for safer, more effective treatments to help children live seizure-free. We typically have several clinical trials going on at any time. Our doctors are:
- searching for and testing new anti-seizure drugs
- developing better methods for diagnosing and treating seizures
- looking for ways to prevent other conditions from triggering seizures
- evaluating new imaging techniques that help surgeons avoid damaging functional brain tissue