“Girls” creator-star Lena Dunham said symptoms of the uterine disorder endometriosis are keeping her from taking part in press for the upcoming season of her HBO comedy-drama.

Addressing a message to “Beloved Pals” on her verified Facebook page, Dunham, 29, wrote, “I won’t be out and about doing press for the new season. 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 [2017’s] season 6 of Girls the best one yet.”

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Referring to two of her show’s five executive producers besides herself, Dunham added, “I’m lucky enough to have support and backup from Jenni [Konner], Judd [Apatow] 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 in which tissue that normally lines the inside of the uterus grows outside it. Endometrial tissue normally thickens, breaks down and bleeds with each menstrual cycle, but when located outside the uterus, its discharge remains in the body. Cysts called endometriomas can form, as well as scar tissue and adhesions that bind organs together. It can cause pain and fertility problems. Treatment may involve hormone therapy, surgery to remove the endometriomas, and in severe cases, a hysterectomy.

Season 5 of “Girls” premieres Feb. 21.