Absence seizures are a type of epilepsy characterized by brief, sudden lapses in attention or awareness. During these episodes, a person may appear to be staring blankly into space and may not respond to external stimuli. These seizures typically last only a few seconds and can occur multiple times a day, often without the individual realizing it. These seizures are most common in children and can sometimes be mistaken for daydreaming. Absence seizures are caused by abnormal electrical activity in the brain, and while they are generally not harmful, they can interfere with learning and daily activities if left untreated.