"nighttime panic attack"

Terror Arriving in Sleep, 'Nocturnal Panic Attack': Could It Be You Too?

Have you ever tossed and turned in the early morning hours? Have you ever had your heart suddenly pound, your breath catch, and found yourself swept by an inexplicable terror? Is this uninvited guest arriving in your sleep familiar to you as well? We call this nocturnal terror a 'nocturnal panic attack.'