Some, but not all, people with epilepsy notice sensations and behavior changes hours or even days before a seizure. Called prodrome, these feelings are separate from the seizure, but are often considered a warning that a seizure may soon occur. An aura is warning symptom which can be a feeling, sensation, thought or behavior that occurs just prior to a seizure – and is sometimes considered part of the seizure.
According to the Epilepsy Foundation, warning signs of seizures include:
- Odd feelings, often indescribable
- Unusual smells, tastes or feelings
- Unusual experiences – “out-of-body” sensations; feeling detached; body looks or feels different; situations or people look unexpectedly familiar or strange
- Jerking movements of an arm, leg or body
- Unexplained confusion, sleepiness, weakness
- Tingling, numbness or feelings of electricity in the body
Generally, seizures are unpredictable and brief. While symptoms vary widely, they tend to be stereotypic or remain similar from episode to episode. This is why people with epilepsy are advised to keep track of feelings and behaviors that occur before or during a seizure.
Males and females of all races, ethnic backgrounds and ages are affected by epilepsy. In most cases, the cause of epilepsy is unknown. Some known conditions that affect the brain can cause epilepsy. According to the Centers for Disease Control and Prevention, these include:
- Brain tumor
- Brain infection, such as neurocysticercosis (a parasitic infection)
- Traumatic brain injury or head injury
- Loss of oxygen to the brain (during childbirth, for example)
- Genetic disorders, such as Down syndrome
- Other neurologic diseases, such as Alzheimer’s disease
While genetic factors play a role in many cases of epilepsy, most children of a parent with epilepsy will not develop seizures or epilepsy. Researchers are still working to understand the genetic component of this condition.
Research is ongoing to find a cure for epilepsy, but to date there is no universal cure for this condition. In some cases, children can outgrow epilepsy as their brains mature. Surgery can sometimes “cure” epilepsy by removing the part of the brain thought to cause the seizures. Medications do not cure epilepsy but can often control seizures. Other treatments such as vagal nerve stimulation – which sends electrical impulses to the brain – can help patients prevent seizures.