Any bad, miserable, difficult or terrifying situation or experience that arouses anxiety, terror, agony or great displeasure.
A very bad or frightening dream.
A feeling of extreme anxiety or suffocation experienced during sleep; Sleep paralysis.
To have a nightmare.
A sudden onset of pain or emotion.
The act of taking possession, as by force or right of law.
A sudden attack or convulsion, (e.g. an epileptic seizure).
That which is seized, or taken possession of; a thing laid hold of, or possessed.
To undergo an epileptic seizure.