That is more than 2 years now that Todd Duffee has left the UFC. A rare nerves disorder forced him to take a break. This disease was so that he had shoulder's pain, was not always stable on his legs, had difficulty with his body side; he had even the difficulty to walk some days.
Luckily for him, one morning, he woke up and was in perfect condition to fight. For him, it is a relief because he said, people were asking him at least 3 times a day when he was going to fight again. He can finally refocus on his passion; mixed martials arts.
You can get more details on Duffee in this interview given to Ariel Helwani.