An indication of simple absence seizure is a vacant stare, which may be mistaken for a lapse in attention that lasts about 10 seconds, though it may last as long as 20 seconds, without any confusion, headache or drowsiness afterward. Signs and symptoms of absence seizures include: 
Sudden stop in motion without falling
Lip smacking
Eyelid flutters
Chewing motions
Finger rubbing
Small movements of both hands
 Afterward, there's no memory of the incident. Some people have many episodes daily, which interfere with school or daily activities. A child may have absence seizures for some time before an adult notices the seizures, because they're so brief. A decline in a child's learning ability may be the first sign of this disorder. Teachers may comment about a child's inability to pay attention or that a child is often daydreaming. When to see a doctor Contact your doctor: 
 
The first time you notice a seizure
If this is a new type of seizure
If the seizures continue to occur despite taking anti-seizure medication
 Contact 911 or emergency services in your area: 
If you observe prolonged automatic behaviors lasting minutes to hours — activities such as eating or moving without awareness — or prolonged confusion, possible symptoms of a condition called absence status epilepticus
After any seizure lasting more than five minutes
