Mad Men star reveals lifelong struggle with disorder that's 'gotten progressively worse'

A star of the hit TV series Mad Men has opened up about something she has struggled with for several years.

January Jones is known for her portrayal of Betty Draper, the long-suffering wife of serial cheater Don Draper, and later aspiring politician Henry Francis - after she and Don separate.

I know, spoiler alert, but the show finished 10 years ago now, so you've had plenty of time to go and take in the exploits of uber-lothario Don as he drinks, smokes, and seduces his way through the world of advertising.

Jones has now opened up about a condition that she has had for a long time, which has been 'getting worse' over the years.

This is something which affects millions of people, and can be very difficult to deal with in more extreme cases.

January Jones opened up about her condition (Instagram/January Jones)

The condition is called misophonia - where someone gets an extreme reaction from hearing a certain noise which doesn't bother someone else.

If you've ever been left with your skin crawling and feeling flashes of irritation and anger because someone was chewing too loudly, then you may have misophonia.

Speaking about her experience with it, Jones said in a post on her Instagram story: "For today, I'd like to talk about something that I've been struggling with my whole life, which is called misophonia. And it's gotten progressively worse over the years."

The star went on to joke that since finding out that the sounds of eating annoy her, Jones' brother-in-law has reacted in classic sibling fashion and made things worse by eating chips around her.

She said: "I have a brother-in-law whose favorite food is chips. Just all the time, he eats chips.

Jones said she has misophonia (Presley Ann/Getty Images for Frame)

"I have talked to him about this many times, and he seems to think it's funny to eat chips around me now, because it's an ongoing joke to see what happens and see what I do. I just think it's really unkind to my issue and also very dangerous for him."

Jones joked that the visceral reaction she can get might even drive her to extreme measures to stop the sound.

"So what I didn't do today, was record this video inside a prison," she joked, adding: "Because I've imaged many ways to do it. But I haven't. I didn't. Not yet."

Whelp.

Nonetheless, Jones clarified that 'otherwise, he's a really nice guy', adding: "And it's his birthday today, so happy birthday. I hope you're eating a f**k load of chips."