George Conway, the husband of White House counselor Kellyanne Conway Kellyanne Elizabeth ConwaySpecial counsel investigating DeVos for potential Hatch Act violation: report George and Kellyanne Conway honor Ginsburg Trump carries on with rally, unaware of Ginsburg's death MORE and a top critic of President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE, is firing back after the president called him a "stone cold loser” and a "husband from hell."

"You. Are. Nuts," Conway wrote in one of two quick tweets responding to the president's early Wednesday morning insults.

“You seem determined to prove my point. Good for you!” Conway said in his first tweet responding to Trump, adding the hashtag #NarcissisticPersonalityDisorder.

You seem determined to prove my point. Good for you! #NarcissisticPersonalityDisorder https://t.co/ZSpb3UXVPC — George Conway (@gtconway3d) March 20, 2019

Conway also shared a list of diagnostic criteria for narcissistic personality disorder, an illness the lawyer previously suggested the president suffered from.

The manual, nearly identical to a tweet he shared on Monday, describes narcissistic personality disorder as “a pervasive pattern of grandiosity (in fantasy or behavior), need for admiration, and lack of empathy” and the latter as “a pervasive pattern of disregard for and violation of the rights of others.”

Conway has raised concerns about the president’s mental state in recent weeks, posting a series of tweets last week asking whether a "serious inquiry" needs to be made into the matter.

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“Don’t assume that the things [Trump] says and does are part of a rational plan or strategy, because they seldom are,” Conway said in a tweet on Monday. “Consider them as a product of his pathologies, and they make perfect sense.”

At the time, the attorney tweeted that he felt “all Americans” should be “thinking serious” about the president’s “mental condition and psychological state.”