02:12 - Source: CNN
What is bipolar disorder?

Story highlights

Amanda Bynes initially tweeted that she's been diagnosed as bipolar

NEW: She later tweeted that one of her friends tweeted from her phone

NEW: She left up the prior tweets about a diagnosis

She also criticizes the media, which she accuses of lying

CNN  — 

Amanda Bynes’ claim that a microchip implanted in her brain made her tweet bad things about her father could be key evidence in keeping the actress in a mental facility, according to experts.

Although the initial tweet about Bynes’ presumed diagnosis was posted to her verified account early Tuesday, within hours, a separate tweet appeared to dispute it.

“I was at a friends apartment last night and one of my friends tweeted my phone ,” the post said. “sorry guys !”

It’s the latest in a series of confusing missives from Bynes, who made headlines in October when she turned to Twitter with shocking allegations of abuse. Those posts, which accused her father of verbally, physically and sexually abusing her, have been removed. But the more recent tweets suggesting that Bynes, 28, has been diagnosed as bipolar were still visible on Tuesday.

“I was diagnosed bi - polar and manic depressive so I’m on medication and I’m seeing my psychologist and psychiatrist weekly so I’m fine :D,” read one of Tuesday’s initial tweets.

Bipolar disorder, also known as manic-depressive illness, according to the National Institute of Mental Health, causes intense emotional periods called “mood episodes.” These range from manic (extremely happy) to depressive (extremely sad).

The disorder often appears in the late teens or early 20s and can be controlled with medication.

Bipolar disorder and the creative mind

Last month, Bynes was admitted to a Pasadena, California, facility on an involuntary emergency psychiatric hold, not long after she appeared to disavow responsibility for the accusations of abuse.

“My dad never did any of those things,” said a tweet on Bynes’ account on October 10. “The microchip in my brain made me say those things but he’s the one that ordered them to microchip me.”

“In a perfect world, one would be honest about getting a person into a psychiatric hospital, but from her past behavior we have seen that Amanda Bynes avoids psychiatric hospitals at all cost because she doesn’t believe that she’s sick,” Dr. Carole Lieberman, a Los Angeles psychiatrist who has followed Bynes’ story, told CNN on Sunday.

Mental health help: Where to turn

“I need to get a restraining order against Sam Lufti,” said another tweet posted to Bynes’ account Tuesday morning, referring to celebrity manager Sam Lutfi.

Yet another said her parents have limited her cash flow to $50 a day.

“I got discharged for not being gravely disabled,” the tweet read. “But i am conserved and my parents only give me $50 dollars a day and it’s really annoying. … I need to get an apartment and my parents won’t give me access to any of my funds.”

And so goes the latest chapter in Bynes’ very public history of odd behavior and criminal charges.

The ups and downs of Amanda Bynes

Bynes was arrested on a DUI charge in Sherman Oaks, California, last month. Her arrest report noted a “disheveled appearance.”

Bynes was charged with a hit-and-run in 2012, hospitalized for treatment last year after a psychological evaluation and put on probation after a DUI earlier this year.

And she was arrested after allegedly tossing drug paraphernalia out of the window of her New York apartment in May 2013.

In September: Amanda Bynes arrested on DUI charge

The latest episodes of odd behavior come a year after her parents told CNN their daughter was “making great strides towards recovery” from mental illness.

She enrolled into the Fashion Institute of Design and Merchandising in Los Angeles at the start of 2014, but she dropped out in the summer.

People magazine reported in 2012 that Bynes tried to emancipate herself while still a minor, though she never moved out entirely.

CNN’s Todd Leopold contributed to this report.