In the first few weeks following a stroke some stroke survivors will experience a seizure. Seizures are a sign of brain injury and are caused by sudden disorganized electrical activity in the brain. Seizures can be characterized by spasms or convulsions. Stroke is the most common cause of seizures in older people.
If you have an onset seizure, it does not necessarily mean you have or will develop epilepsy. Your risk of having a seizure lessens with time following your stroke. A small number of people will have more than one seizure and will develop epilepsy. If you have recovered and have not yet had a seizure, you are at very low risk of developing epilepsy.
There are over 40 different types of seizures ranging from tingling sensations or ‘going blank’ for a few seconds, to shaking and losing consciousness. Generalized seizures are the most common and dramatic type of seizure and are caused by electrical pulses on both sides of the brain. Partial seizures or focal seizures occur in only one part of the brain. These are common to individuals with epilepsy.
Epilepsy is a neurological disorder in which recurrent seizures occur that cannot be associated with other specific causes. Seizures, as well as the onset of epilepsy, can occur after a stroke. Having one seizure after a stroke does not necessarily mean a person has epilepsy; however, if chronic and recurring seizures are a result of a stroke, then a stroke survivor may be diagnosed with epilepsy.
When stroke warning signs are not clearly present, a seizure may indicate that a person had a stroke, especially in children and infants.
A device called a vagus nerve stimulator (VNS), also known as “a pacemaker for the brain,” is a battery-powered device that can be surgically attached to your vagus nerve in your lower neck. The VNS simulates your nerve with pulses of electrical energy and can help prevent future seizures. You usually continue to take medication while using the device. If medications do not effectively control your seizures/epilepsy, surgery may be an option.
Consult with a healthcare professional to find the treatment that works best for you.
It is important to let people know if you experience seizures or epilepsy. Educating friends, family, caregivers, and co-workers on what to do if you have a seizure is the first step to avoiding injury during a seizure.
- Roll the person on his or her side to prevent choking or vomiting.
- Cushion the person’s head.
- Loosen any tight clothing around the neck.
- Keep the person’s airway open. If necessary, grip the person’s jaw gently and tilt his or her head back.
- Do not restrict the person from moving unless he or she is in danger.
- Do not put anything in the person’s mouth, not even medicine or liquid.
- Remove any sharp or solid objects that the person might hit during the seizure.
- Note how long the seizure lasts and what symptoms occurred in order to inform a doctor or emergency personnel if necessary.
- Stay with the person until the seizure ends.