Panic Attack

Discrete and intense periods of autonomic arousal accompanied by fear.

Reference:
Schmidt, N. B., Lerew, D. R., & Jackson, R. J. (1997). The role of anxiety sensitivity in the pathogenesis of panic: prospective evaluation of spontaneous panic attacks during acute stress. Journal of Abnormal Psychology, 106(3), 355-364. doi: 10.1037/0021-843X.106.3.355.