Reflex anoxic seizures (RAS): Symptoms & Treatment

Reflex anoxic seizures (RAS) are a common type of non-epileptic seizures which mainly occur in infants and younger children, but occasionally persisting into adulthood.

Nearly all cases are benign and without sequelae. They are often confused with other forms of syncope. In some cases, they may trigger epileptic seizures.


RAS actually is a severe “neural mediated” reflex syncope. This transient loss of consciousness is caused by a temporary loss of the blood which carries oxygen to the brain.


Symptoms of RAS mainly are children losing awareness (convulsion) and falling to the ground, face appearing a deathly white color, other symptoms may include:

  • Heart stops, eyes roll and clench the jaw.
  • Body becomes stiffen, breath becomes shallow even stops.
  • Jerk of arms and legs.
  • After a few seconds to half a minute, heart starts beating again and the body relaxes.
  • Remain unconscious in a deep sleep for a few minutes to a few hours.


RAS is not life-threatening. The doctors will exclude any other heart disease by examinations. In a few rare cases the RAS is so severe or frequent that doctors will consider medical treatments.

Please consult your doctors for your treatments.

Keywords: reflex anoxic seizures; RAS; non-epileptic seizure; syncope.

* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.