absence seizure
A generalized seizure characterized by sudden, brief lapses of consciousness without convulsive movements.
Full Definition
Absence seizures are generalized seizures that present as sudden, brief episodes of impaired consciousness, typically lasting 5-20 seconds. During these episodes, the child appears to 'blank out' or stare vacantly, with possible subtle movements like eye blinking or lip smacking. The child is unaware of their surroundings during the seizure and has no memory of the event afterward. These seizures are most common in childhood and may occur multiple times per day. They can significantly impact learning and academic performance if not properly managed.
Usage
Usage note: Avoid the outdated term 'petit mal seizure' in modern clinical documentation.
In Context
- "The teacher reported that Sarah frequently had absence seizures during class, appearing to daydream for several seconds at a time." — Clinical documentation
- "EEG monitoring revealed typical 3-Hz spike-and-wave discharges characteristic of childhood absence seizures." — Diagnostic report