Dunham was scheduled to headline discussions with fans in several cities starting at the end of the month. She wrote on her Lenny Letter website that while her "travelling variety show" has been a "ray of sunshine" for her amid "these dark political days," her endometriosis has worsened and her body cannot bear the stress of touring.
"...To be perfectly honest, I'm in the greatest amount of physical pain that I have ever experienced. After being told I was endometriosis-free after my last procedure, more disease was found in deeper spots that required immediate surgery and now physical therapy."
The 31-year-old star said people who purchased tickets would be refunded.
"We hope to be back when my uterus has taken a chill pill. (But not my spiritual uterus. She'll never chill. She's incapable of chill.)," she added.
The actress had said in April she had undergone her fifth procedure to treat the disorder, a female reproductive disease in which abnormal tissue grows outside the uterus, which can cause infertility.
Earlier this month, Dunham left the 2017 Met Ball early and was hospitalised for complications from her most recent surgery.
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