One of the most common types of sleep disorders are night terrors. A night terror is a sleep disruption that bears a faint resemblance to a nightmare, but differs in intensity and inconsolability.
Mostly affecting kids, a night terror is not technically a dream, but more like a sudden reaction of fear that happens during the transition from one sleep phase to another. A night terror usually involves a child sitting suddenly upright and screaming. The breathing and heartbeat increase and so is the person’s sense of being scared.