Limit Setting Sleep Disorder This is usually found in children. Limit-setting sleep disorder happens when someone delays or refuses to go to bed. The best cure is to set an absolutel bedtime and ensure that it is met. The child will fall asleep quickly when this is done.If limits, such as bedtimes, are not set firmly, the sleep will be delayed, and the child may fail to get enough sleep. See also sleep onset association disorder. This disorder is a type of extrinsic sleep disorder, means it comes from something outside the body. Extrinsic sleep disorders are a type of dyssomnia. | 
