Reliable detection of Win98 may not be possible. Paroxysmal Disorders Paroxysmal disorders are those that come on or recur suddenly. They include night terrors, nightmares, sleepwalking, and bedwetting. During the episode, heart and breathing rates may increase and the child's eyes may be open, but he probably won't remember what happened - other than waking up and feeling scared.
Night terrors occur in the first third of the sleep cycle, when the child is in deep sleep.
By themselves, night terrors are not dangerous, but what happens during one can be. A child may jump out of bed and do something that he might not otherwise do. There is no known cause of night terrors, but some doctors believe that it has to do with physical causes. Apnea may be present. Nightmares Nightmares differ from night terrors in that they are usually psychologically based, are more often remembered, and aren't usually dangerous.