http://www.webmd.com/sleep-disorders/night-terrors#1 WebMD advises estimated night terrors ages of 3- 12 years http://www.webmd.com/sleep-disorders/night-terrors an estimated 1-6% http://www.webmd.com/sleep-disorders/night-terrors#1 http://www.webmd.com/sleep-disorders/night-terrors#1 night terrors estimated Night Terrors WebMD night terrors http://www.webmd.com/sleep-disorders/night-terrors#2 http://www.webmd.com/sleep-disorders/night-terrors#1 Night Terrors Night Terrors http://www.webmd.com/sleep-disorders/night-terrors