Night terrors are very dramatic awakenings that happen during the night in the first few hours of sleep. They are very distressing to watch as your child seems very upset and can't be consoled. About five children in every 100 will have night terrors. They usually happen in pre-school and primary school aged children. Night terrors do not have any long-term effects on your child and usually your child will outgrow them. Try to have a regular sleep schedule with a good bedtime routine. Overtiredness and not enough sleep can make night terrors more frequent.