Jon Hamm will undergo surgery to get a polyp removed from his throat, which he was overheard talking about with his Mad Men co-star January Jones at an Emmys after party last night.

The actor’s rep referred to it as a routine outpatient procedure.

Hamm also explained the new facial hair he was sporting at the Emmys, telling E! News it was a product of not shaving for three days.

"This ends up happening. I was in England and was working on a project and had been away for four months and I finally got home and I was like, 'I think I'm done with shaving for a little while.' That was three days ago and then this happens,” he explained.

A source told the National Enquirer about Hamm’s surgery that he has been “terrified” that if he has it, “his vocal cords could be severely damaged.” He reportedly recently coughed up blood, which made him realize the surgery is imminent.

“Jon has tried to deal with the pain, but over time, he started coughing more and more often, which only aggravated his condition and made his throat feel like it was raw,” said the source.

Hamm recently finished filming The Million Dollar Arm.

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