A 15 year-old girl from the UK recently woke up from one of the longest naps of her life after falling asleep in April and waking up just last week because of a condition called Kleine-Levin Syndrome.
The condition is called Kleine-Levin Syndrome (or Sleeping Beauty Syndrome), in which people may sleep for as long as 20 hours a day for periods of time, according to the National Institutes of Health, The Sun reported.
“When she’s in an episode, she might get up to go to the toilet or get a drink but she’s not awake. I call it sleep mode,” Bernie, the girl’s mother, told the newspaper.
“When she wakes, she thinks it’s the following day. She doesn’t have any memory of it,” she said.
Bernie told the Daily Mail: “When she’s in sleep mode she can be quite moody but she can’t help it. She’s like a toddler who wants to do things her own way. She stamps her foot if she doesn’t get what she wants. It’s like having two different kids in the house.”
The Kleine-Levin Syndrome usually affects teenagers and they can stor experiencing it once they become adult, Huffington Post quoted Stanford University’s Center for Narcolepsy as saying.
The National Institutes of Health reported that there is no proper medication to the condition except