Donald Trump unleashes repulsive Twitter rant against female journalist.

US President Donald Trump has assailed a female TV news host in highly personal terms, calling her “crazy” and alleging she had been bleeding at one point from a facelift, in a Twitter attack that drew strong criticism including from fellow Republicans.

Trump took fierce aim on Thursday at the hosts of the MSNBC program Morning Joe, Joe Scarborough and Mika Brzezinski.

The Republican president called Brzezinski “low I.Q. Crazy Mika” and said she was “bleeding badly from a face-lift” when she visited one of his properties around New Year’s Eve.

He referred to former Republican US congressman Scarborough as “Psycho Joe.”

I heard poorly rated @Morning_Joe speaks badly of me (don’t watch anymore). Then how come low I.Q. Crazy Mika, along with Psycho Joe, came..

— Donald J. Trump (@realDonaldTrump) June 29, 2017

…to Mar-a-Lago 3 nights in a row around New Year’s Eve, and insisted on joining me. She was bleeding badly from a face-lift. I said no!

— Donald J. Trump (@realDonaldTrump) June 29, 2017

Trump is known for his prolific Twitter habit, which includes mocking attacks on critics and rivals, but his tweets on Thursday drew a particularly strong response.

“It’s a sad day for America when the president spends his time bullying, lying and spewing petty personal attacks instead of doing his job,” MSNBC’s communications office said on Twitter.

On Thursday morning's show, Brzezinski excoriated the Trump administration and said its officials should not act "lobotomised" because they are so scared of the president.

Republican lawmakers and others sharply rebuked Trump.

The tweets "represent what is wrong with American politics, not the greatness of America," said Republican Senator Lindsey Graham, while another, Ben Sasse, called Trump's remarks "beneath the dignity of your office."

"I don't see that as an appropriate comment," Republican House of Representatives Speaker Paul Ryan said of Trump's tweets.

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White House spokeswoman Sarah Sanders defended his tweets.

"I don't think that the president has ever been someone that gets attacked and doesn't push back," she told Fox News Channel.