A person has epilepsy if they have had two or more unprovoked or spontaneous seizure., There are many different kinds of seizures that a person can have that are often grouped into two categories. Type one is a generalized seizure that affects both sides of your brain. Type two is called a focal seizure or partial seizure that involves only one side of the brain, or even just a small part of one side. To break it down even further, generalized seizures include generalized tonic-clonic, or grand mal seizures, and also absence or petit mal seizures. With focal seizures, you may or may not retain awareness of the environment, but usually some part of your body, like your hand, arm or face, is moving rhythmically and voluntarily out of your control.