Sleep problems and a lack of sleep can have negative effects on childrens performance in school during extracurricular activities and in social relationships a lack of sleep may cause . More common in children than adults night terrors cause a person to get up suddenly from sleep appearing intensely scared or agitated and often crying yelling and occasionally sleepwalking. Are there different types of sleep problems in children sleep problems are classified into two major categories the first is dyssomnias in children dyssomnias may include sleep onset. Sleep related movement disorders sleep myoclonus of infancy this is a self limited disorder usually resolving by 6 months of age in this disorder infants develop jerking movements during sleep involving the whole body trunk or limbs no treatment is necessary