Lil Wayne having seizures again.......

Wayne was hospitalized Sunday in Chicago after he was found unconscious in his hotel room at the Westin on Michigan Avenue after suffering at least one seizure.

He has  been released from the hospital, and we're told he's taking a break from work to get himself right ... on doctor's orders.

According to the doctors he was having seizures  due to a super busy schedule mixed with the fact he was getting NO sleep. We're told the attack had nothing to do with him frequently sipping lean.

But doctors say he will be good for the show he has on  September 23rd.