This kind of seizure doesn't necessarily mean the person has epilepsy. A person has epilepsy when the brain's activity is disrupted and seizures happen over and over again. Some seizures, especially those that cause a person to lose consciousness or to fall down, can cause injuries. Although life-threatening complications from a seizure are rare, people who have repeated seizures are at risk for serious complications. So it's best for people with epilepsy to have treatment to prevent seizures from happening.
Epilepsy can have many causes.
Many people with epilepsy haven't had a brain injury. Often, no cause for epilepsy can be found. Some kinds of epilepsy run in families, but many kinds don't. Most children whose parents have epilepsy don't get it themselves. Your doctor can tell you what kind of epilepsy you have and if it might run in your family.