The actor spoke to media at an event in Kerala about his intention to undergo more surgery for an existing nerve condition.
"I had to delay going due to the acting schedules and the court cases. But now I will go," Khan said, according to IANS.
He was referring to charges made against him for allegedly poaching an endangered blackbuck antelope in 1998.
Khan originally had surgery in late 2011, but his condition flared up again while shooting in the cold weather of Dublin for Ek Tha Tiger.
The Bollywood star previously told Digital Spy: "As you get older you are supposed to look younger, look fitter, be more energetic and do action and romance even better.
"It's strange, but there is a lot more responsibility out here for us now."