Hollywood starlet Lindsay Lohan's relationship with her father has hit rock bottom as she called him a "pathological liar" on the website Twitter following his attempt to stage a intervention in her life. The 23-year-old actress called Michael Lohan her "ex-dad" and denied his allegations that she is addicted to prescription drugs,reported New York Daily News. On Thursday,Lohan and her estranged dad,had a chaotic showdown outside her LA apartment. It ended with him threatening to seek a Britney Spears-style conservatorship over worries she's in a downward spiral of late-night partying and prescription drugs. He then arrived back at her home with sheriff's deputies to conduct a "welfare check" on his younger daughter,16-year-old daughter Ali,who too was at the apartment. The 'Mean Girls' star then took to Twitter to vent her anger. "pathological liar - a person who lies to the point of it being considered a disease or condition,an abnormally habitual liar = MY FATHER.(sic)" Lohan tweeted. "I have no choice but to make this public,due to my sister's safety,as well as my own,'my ex-dad' just WALKED INTO MY APT like the devil's advocate with officers. When will it ever end? It's been going on my whole life with him - hasn't he caused enough pain(sic)" Lohan wrote.