Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

Sign Up for a Free Account For information on discounts, see Plans & Pricing

  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

  • Listen to MedLink on the go with Audio versions of each article.

Typical absence seizures during hyperventilation in childhood absence epilepsy

Typical absence seizures in a 4.8-year-old boy with normal development and a history of absence seizures occurring at a frequency of over 10 per day for the last 3 months. During hyperventilation, he suddenly stopped, his eyes opened and stared, and he displayed mild eyelid and atonic body movements and hand rubbing. The duration of the episodes varied between 10 and 20 seconds. During the event, he was unresponsive. (Contributed by Dr. Athanasios Covanis.)