Lena Dunham disputes allegations of sexual abuse in a Twitter 'rage spiral'

In this Aug. 23, 2014 file photo, actress Lena Dunham arrives at Variety and Women in Film's pre-Emmy celebration in West Hollywood. (Photo by Evan Agostini/Invision/AP)

NEW YORK -- Lena Dunham was in a "rage spiral" as she disputed a writer's contention that she sexually abused her little sister.

In a recent essay for the conservative National Review Online, Kevin D. Williamson cited a passage from Dunham's bestselling memoir "Not That Kind of Girl" in which she recalled kissing and touching her sister, Grace. "Very disturbing behaviour," Williamson wrote.

In response, Dunham posted several tweets over the weekend that she called a "rage spiral." She wrote that the allegations were "upsetting" and "disgusting." She described the incidents as those of a "weird" 7-year-old girl and challenged her critics to acknowledge that such experiences were common.