To lose one's mind, go crazy.
To become explosively angry; to lose one's temper.
To begin to laugh uncontrollably.
To feel devastated, or distraught, especially when one's sadness is overwhelming.
To lose control of a situation.
To cease to have a skill or ability, to lose one's touch, to be washed up.
To have a nightmare.
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.