Lil Wayne Hospitalized -- SECOND SEIZURE

2:45 PM PT -- Wayne was just released from Ochsner Medical Center in Kenner, Louisiana ... and TMZ obtained a photo of the rapper as he entered his waiting SUV (see photo above).

3:58 PM PT -- A person claiming to be Wayne's rep has released a statement saying our story is false and that he's at home in Louisiana recovering from migraines.

But TMZ has confirmed our story with people who were at the hospital and people who positively represent Wayne ... and we are positive our story is correct.

Lil Wayne is about to be released from a Louisiana hospital ... after suffering ANOTHER seizure on board an airplane ... his 2nd seizure in 24 hours ... TMZ has learned.

Weezy was on board a flight from Texas to LAX -- when he began to convulse. We're told the flight was immediately diverted to Louisiana ... and Wayne was admitted to a local hospital for treatment.

We broke the story ... Wayne had been hospitalized last night after a pilot reported that the rapper was experiencing seizures on board his flight.

Wayne was treated in Texas -- his rep insisted Weezy was only suffering from dehydration and migraines ... and was released hours later.