In one sentence, describe what the following article is about:

When most people think about seizures, they imagine a person convulsing. However, seizures can look different for different people. One manifestation of a seizure simply looks like a blank stare that can last anywhere from a few seconds to a few minutes. The individual may appear to look right through you. They may or may not blink.  This is often, but not always, accompanied by a loss of awareness. Seizures accompanied by blank stares are usually absence seizures, which are common in children. In many cases, these seizures don't cause long-term problems. Atonic seizures involve sudden loss of muscle strength, which can cause the person to fall to the ground. The person's muscles will go limp, causing a sudden drop. These seizures usually last less than 15 seconds.  The person usually remains conscious during the seizure. A person with atonic seizures may not always fall down. The drop could affect just the head, just the eyelids, or just one part of the body. Seizure activity may cause a person to blank out and lose anywhere from a few moments to a few minutes of awareness. In some cases, a seizure may even cause the person to pass out and lose consciousness completely.  If a person does not revive within a matter of a few minutes, seek emergency medical attention. Loss of consciousness may last 10-20 seconds, followed by muscle convulsions that usually last for under 2 minutes. This is usually caused by a grand mal seizure. The most recognizable seizure symptom is shaking, jerking, and convulsing. This can range from very mild and hardly perceptible, to quite violent and severe. When you or someone with you experiences seizure-like symptoms, it is important to write all them down, including their duration. Since doctors are not usually present at the time of a seizure, it can make seizures difficult to diagnose. The more information you can provide a doctor, the better they can help determine the type of seizure that has been experienced, and the possible cause. If you or someone with you experiences seizure-like symptoms for the first time, call a doctor and possibly visit the emergency room. If the person has already been diagnosed with epilepsy, medical care may not always be necessary. Seek immediate medical care if:  A seizure lasts longer than 5 minutes. A second seizure occurs immediately. You have trouble breathing after the seizure stops. You are unconscious after the seizure. You have a fever over 103 °F (39 °C). You are pregnant, or recently had a baby. You have been diagnosed with diabetes. You have sustained an injury during the seizure.

Summary:
Notice a blank stare. Watch for a sudden loss of muscle strength. Notice a loss of awareness or consciousness. Recognize jerking movements or shaking of the arms and legs. Record the symptoms. Seek medical attention.