Lisa Rinna has responded to claims reportedly made by Taylor Armstrong about Lyme disease.

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During filming on The Real Housewives of Beverly Hills season four, Armstrong allegedly raised questions about Yolanda Foster's illness, and whether or not it was as bad as she was making it. Days later on Twitter, Rinna tweeted back to an account, which had called her out.

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Earlier this week, a report surfaced, revealing details of Rinna and Armstrong's filming feud, which took place at the home of Lisa Vanderpump.

“[Taylor Armstrong] was openly questioning how sick Yolanda was. Taylor said she was having major doubts about how serious the Lyme disease was for Yolanda, who wasn’t at the party,” Radar Online reported earlier this week. “Lisa Rinna was openly seething with anger because [Taylor Amrstrong] doesn’t even know Yolanda, and shouldn’t have even gone there! It quickly became obvious to Lisa that Taylor is being brought back this season to stir the pot.”

The source said Armstrong and Rinna had a “tense showdown,” before Rinna vowed “to stay away" from "opportunist" Armstrong.

The Real Housewives of Beverly Hills is expected to return to Bravo for season six this winter.

Tags: Lisa Rinna Bravo The Real Housewives of Beverly Hills Reality TV taylor armstrong yolanda foster lyme disease