Khan, 45, whose "Bodyguard" opens in cinemas next week, will be in the US for treatment after the film's release.
"It's a non-surgical procedure and doctors have told I'll be back to work within four days," Khan told Reuters.
The actor had been suffering from pain in his jaw and the condition was recently diagnosed as trigeminal neuralgia.
"It's been happening for the past 4-5 years and just got diagnosed this month," Khan told Reuters.
Khan is known for his box-office dominance over the Eid weekend. His biggest hits in the last few years have come during this period, with "Dabbang" being 2010’s blockbuster.
Khan is also scheduled to do a number of big-ticket films, including "Ek Tha Tiger" with ex-girlfriend Katrina Kaif. With the success of "Ready" in June, he cemented his place as a star who can pretty much guarantee box-office success with his charisma.