The cast of Girls will be promoting its fifth season without creator and star Lena Dunham on hand.

Dunham wrote an open letter to fans on Monday (February 9) to clarify that her struggle with the chronic illness Endometriosis precludes her from making any public appearances at the moment.

The writer-star explained on Facebook: "As many of you know I have endometriosis, a chronic condition that affects approximately 1 in 10 women's reproductive health. I am currently going through a rough patch with the illness and my body (along with my amazing doctors) let me know, in no uncertain terms, that it's time to rest.

"That's a hard thing to do, but I'm trying, because all I want is to make season 6 of Girls the best one yet. I'm lucky enough to have support and backup from Jenni, Judd and the whole Girls gang.

"So many women with this disease literally don't have the option of time off and I won't take it for granted."

Endometriosis is a condition that develops when uterine tissue begins growing abnormally outside of the uterus.

What to Read Next

Dunham is due to begin work later in the year on the sixth and final season of Girls, due to air in the US early in 2017 on HBO.

The penultimate season of Girls kicks off in the US on February 21. Sky Atlantic airs the series in the UK.

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Justin is a freelance entertainment journalist and writer. He first joined Digital Spy as a freelance entertainment reporter in 2010 and also worked as a sub-editor for the brand, serving as Night News Editor from 2016 to 2024. Over more than a decade, Justin has covered numerous major entertainment events from the US and has interviewed a wide-ranging group of public figures, from comedian Steve Coogan to icons from the Star Trek universe, cast members from the Marvel Cinematic Universe and reality stars from numerous Real Housewives cities and the Below Deck franchise. Justin has also been on the ground to cover major pop culture events like the Star Wars Celebration and the D23 Expo. He's written for titles across the Hearst network, plus the likes of CBR and Us Weekly.