“I’m like the real life Sleeping Beauty.”

A teenage girl from Wales has a rare condition which means a night out can leave her flat out for days.

Hermione Cox-Denning can sleep up to a week, without even waking up to eat, drink, or go to the toilet.

The 18 year old was recently diagnosed with Kleine-Levin Syndrome, a complex neurological disorder characterised by recurring periods of excessive amounts of sleep and cognitive and mood changes.

Hermione has taken to YouTube to explain her condition, which she says she developed three years ago:

“My memory of my first episode is hazy. I just remember waking up for a few minutes throughout the hours and hours of sleep, dreary and confused.”

“My mind was so confused – I couldn’t speak, I didn’t eat, or drink and I didn’t go the toilet. It was like my body shut down.”

“I was always on my phone before, but I didn’t speak to anyone for a whole week because I kept sleeping.”

“I think a lot of my friends were worried because I just disappeared.”

She said she went to see a doctor and they said that it was depression and mental health issues:

“My dad was saying that this wasn’t normal – I wasn’t just napping, I was sleeping for full days.”

Following her diagnosis, Hermione said it took her awhile to discover what would trigger an episode but she now knows a big night out will:

“I realised that when I drank alcohol, I would often have an episode the next day.”

“I’ve learned that I can have one or two drinks, but much more than that causes me to plunge into a deep sleep for days afterwards.”