Elton John has canceled multiple shows due to an illness that has dogged him for several months ... sources familiar with the situation tell TMZ.
We're told Elton has canceled shows between now and May 6 at The Colosseum at Caesars Palace in Vegas, where he's performed for years.
Our sources say Elton had a medical procedure a few months ago and was advised by doctors he needed rest. We're told he did not heed that advice and continued working like crazy. Apparently, it caught up with him and he is now following doctor's orders.
An announcement about the cancellation is imminent.