Conor McGregor has dismissed fears he has picked up an injury which could have ruled him out of his third fight with Dustin Poirier.
Fans were concerned the former two-weight world champion had a staph infection after a photo showed a mark on his left arm.
The infection can be serious if it enters the blood with some sufferers contracting sepsis.
But McGregor claims the mark was simply the result of landing elbows during his training camp for the July 10 bout.
Asked to confirm he didn't have an infection by a fan, the Irishman said: "No. Just vicious brain damaging elbows."
His comments echoed some of the more optimistic fans who were convinced their idol had simply suffered a graze in training.
McGregor will bid to avenge his January defeat by Poirier when the rivals clash for a third time next weekend.
And the Dubliner has offered plenty of hints that he has ditched his "Mr Nice Guy' image and returned to his trash-talking best.
McGregor showed first Donald Cerrone and then Poirier plenty of respect in the build-up to their respective fights.
But his social media activity suggests he has returned to the persona which so rattled Poirier before their first meeting in 2014.
McGregor tweeted on Thursday: "Quick take for you and your team pal – [sic] You’s got pucked around in the clinch! Elbows, knees, shoulders, fists. Looking outside the cage for advice."
That followed up a comment about the identity of the best boxer in MMA after Poirier claimed to have the best hands.
"Best boxer, my ass! Shooting ass, shelling ass b****," retorted McGregor.
And the former featherweight and lightweight champion has been advised to talk trash next week by one of the best to ever do it in Chael Sonnen.
"I was given this advice when I was a kid," the former UFC title challenger said. "One of my coaches told me to write on my mirror every day that I was the champion.
"I never did it, I never one day wrote it down and taped it on the mirror and it's not because I didn't have paper or a pen or scotch tape, it's because I didn't believe it.
"I would have felt silly, what if somebody saw? I didn't believe it.
"I only bring that to you because later in my life when I started to do it, I did believe it, and I believe that Conor McGregor went through the same thing.
"When everybody thought he was out there being an entertainer or trying to get in Jose Aldo's head, I don't believe that's what was motivating.
"I believe that Conor was like me, where he started to make these claims and how saying these things out loud effected him inside and also how it effected his training and his discipline and work ethic.
"I believe Conor wasn't trying to talk Jose Aldo or Floyd Mayweather out of something, he was trying to talk himself into something, and he succeeded."
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