Reflex anoxic seizures.

The prevalence is unknown. RAS typically affect pre-school children, and there is often such a clear description from the parent that the diagnosis is (almost) secure. The child will have had one or more similar episodes, and in at least some, there will have been a trigger or provocation just beforehand. Triggers are generally sudden unexpected and unpleasant e.g. a sudden trip or fall, a knock to the back of the head, a toy being snatched from them, anything sudden, painful or unpleasant or frightening. The child looks shocked and there may be some expiratory grunts as in crying, or just silence. Color drains to a deathly grey, pale or bluish complexion the child looses consciousness and usually becomes stiff or opisthotonic, as if de-cerebrate. The