Lil Wayne reportedly suffered a seizure during a flight from Wisconsin to California.
The 33-year-old rap star was forced to make an emergency landing in Omaha, Nebraska, because of concerns over his health, according to TMZ.
Wayne had apparently blacked out during the flight, but once paramedics had reached him, he reportedly refused their help.
Wayne has a history of medical problems and it had previously been reported he had adjusted his lifestyle in order to take better care of himself.
A source previously said: "It's more of a history of him having seizures more than it is him partying and drinking and doing things that would trigger a seizure. He's been very open and upfront about his seizures and has been suffering from those types of episodes since he was a kid."
Wayne was reportedly concerned for his life when he suffered similar problems back in 2013.
A source previously explained: "I know that when he was in the hospital back in March , that was an eye-opening experience for him and changed the way he sees life.
"He's young and a lot of people depend on him so it was important for him to keep a brave face but deep down, he was scared. That was a case of him being neglectful toward his health."
Following his six-day stay in hospital back in 2013, Wayne said he suffers from epilepsy, a condition which is noted by seizures.
He said at the time: "This isn't my first, second, third, fourth, fifth, sixth or seventh seizure. I've had a bunch of seizures. Y'all just never hear about them. But this time, it got real bad because I had three of them in a row."
- Bang! Showbiz