A mysterious condition that causes a teenager's memory to reset every two hours has doctors baffled.
Every morning the schoolgirl from IL wakes up thinking it is June 11 - the day she was accidentally kicked in the head by a student crowd surfing at a dance.
Riley Horner of Kirkwood told the station on Monday that she feels a sense of confusion each morning when she awakens.
"I'm very confused and I try to think back, and I can't", she told US TV news outlet WQAD.
Riley Horner, 16, was out with her friends at a social dance held by the Future Farms of America State Convention on June 11 when she was accidentally kicked in the head by another student who was "crowd surfing". However, after dozens of seizures and countless hospital visits, Riley's symptoms are still a medical mystery. And I am not okay with that, ' Riley's distraught mother Sarah said.
They can't find anything physically wrong with her through CT scans or MRIs, which makes coming up with the proper diagnosis almost impossible.
"They can't see anything. You can't see a concussion on an MRI or CT Scan", said Sarah Horner, Riley Horner's mother. "There's no brain bleed, there's no tumor".
Even the simpler things in life are wiped out of Riley's memory.
In order to keep up with her coursework, Riley needs to leave herself detailed notes, take photos of them on her phone and sets an alarm for every two hours so she can brush up on what she has forgotten.
"My brother passed away last week and she probably has no idea", her mother told the station.
Doctors have told the family that Riley may never fully recover, but Ms Horner said she wouldn't give up.
"I know it's hard for them as much as it's hard for me".
"People don't understand - it's like a movie". 'Like I will have no recollection of (this interview) come supper time'. I want more than anything for Riley to remember her Junior Homecoming, Thanksgiving and Christmas this year!
Doctors told the Horners it's a reality they may have to accept for life. "And I am not okay with that", Sarah said tearfully.
'I'm not making memories, ' Riley added.
"I'm not making memories and I'm just really scared", she said.
According to the ABC News report, research shows that after six months of short-term memory loss, the damage can become irreversible, so Riley's family is frantic to find new opinions and options.